Exercise Prescription Basics: Write Your Own Exercise Prescription and Make Every Sweat Count

Opening: One Prescription Beats a Hundred “Just Exercise More”

I’ve been training athletes and general fitness enthusiasts for fifteen years now. Over the years, on the sidelines, in classrooms, and in the gym, the sentence I’ve heard most often isn’t “Coach, I want to get stronger,” but “Coach, I know I should exercise, but where do I even start?”

Behind that sentence lies a deep sense of helplessness. The doctor says “you need to exercise more,” the health check report says “physical activity is recommended,” the news says “sitting is the new smoking”—everyone knows they should move, but no one tells you how to move, for how long, at what intensity, or how often to adjust. So many people buy running shoes that gather mold, sign up for gym memberships they only use three times, or go all out for two weeks fueled by passion and end up injured.

One student stands out in my memory—let’s call him A-Hong. Forty-two years old, a tech engineer, weighing 88 kilograms, with a health report full of red flags. When he first came to see me, he had just gone through a “determined self-improvement” phase the month before: on day one, he rode 50 kilometers along the riverside, and the next day his knee swelled up like a rice cake. He’s been back on the couch ever since. It’s not that he didn’t try—he just had “no prescription.” He treated exercise as a one-time act of penance, not a plan that could be sustained long-term and adjusted based on his body’s feedback.

What this article will teach you is how to write an “exercise prescription” for yourself. It’s not mysticism—it’s a mature, established method in exercise science. Once you’ve written this prescription, every drop of sweat will count, instead of training by feel and ending up with nothing but soreness and frustration.

What Is an Exercise Prescription? How Is It Different from “Just Moving Around”

An exercise prescription, simply put, takes “exercise” and quantifies, personalizes, and structures it into a plan that—like a doctor prescribing medication—has a dosage, a frequency, a treatment course, and adjustments based on follow-up results.

When a doctor prescribes medication, they specify: what drug (type), how much per dose (dosage/intensity), how many times a day (frequency), how long to take it (duration), and how to adjust at the follow-up visit. An exercise prescription follows the exact same logic. The only difference is that the “drug” is your own physical activity, the “side effects” are soreness and overtraining, and the “therapeutic effects” are improvements in cardiorespiratory fitness, strength, metabolism, mood, and quality of life.

“Just moving around” isn’t bad—for someone who’s completely sedentary, any activity is better than none. But the problem with “just moving” is that it’s hard to make progress, hard to manage risk, and hard to stay motivated. Without structure, you can’t see results, and without results, you’re likely to give up. The greatest value of an exercise prescription is turning the vague “exercise more” into a clear “here’s what I need to accomplish this week,” giving you a framework, feedback, and a sense of achievement.

The Four Major Goal Categories of Exercise Prescription

Before writing a prescription, you need to clarify “why do I want to move?” Different goals lead to different prescriptions. In clinical and exercise science, exercise purposes are commonly divided into four broad categories. Let me organize them into a table for you:

Goal Category	Primary Training Focus	Typical Audience	Plain-Language Explanation
Cardiorespiratory Endurance	Aerobic exercise (brisk walking, jogging, cycling, swimming)	Those wanting fat loss, improving metabolic syndrome, or boosting stamina	Making the heart and blood vessels more durable and efficient
Muscular Strength and Endurance	Resistance training (bodyweight, resistance bands, machines, barbells)	Those wanting muscle gain, fall prevention, or better metabolism	Making muscles stronger, bones healthier, and raising basal metabolic rate
Flexibility and Mobility	Stretching, joint mobility, yoga	Sedentary workers, those with stiff joints or a tight lower back	Increasing the body’s range of motion and making movement smoother
Balance and Functionality	Single-leg stands, core training, daily movement simulation	Older adults, post-surgery rehab, fall prevention	Making daily movements more stable and reducing fall risk

Ideally, a complete exercise prescription covers all four categories, just with the proportions adjusted to your goals. Someone aiming for fat loss should have a higher proportion of aerobic work, but they absolutely can’t skip strength training; an older adult wanting to prevent falls should focus on balance and strength, but cardiorespiratory fitness can’t be neglected either. That’s the first layer of “personalization.”

Let me give you another case, very different from A-Hong, so you can feel how “two things both called exercise prescriptions can look worlds apart.” Auntie Shu-Fen, sixty-five, retired, on the slender side, no metabolic issues—but after slipping and twisting her ankle at the market once, she became terrified of falling, increasingly afraid to go out, and her muscle mass has been declining day by day. Her problem isn’t cardiorespiratory—it’s strength, balance, and confidence. So the prescription I wrote for her focused not at all on “how fast you run or how far you ride,” but on lower-body strength two to three times a week (chair-assisted squats, seated leg raises), balance drills (wall-supported single-leg stands, heel-to-toe walking), plus a daily walk for sunshine. Three months later, not only was she walking steadily, she even dared to hike Elephant Mountain’s trail on her own. See—A-Hong and Auntie Shu-Fen are both “getting exercise prescriptions,” but one trains cardiorespiratory fitness and fat loss while the other trains strength and fall prevention. The prescriptions look completely different. That’s why no single training plan works for everyone.

The Scientific Foundation: FITT-VP, the Six Dials of Prescription

The backbone of an exercise prescription is the FITT-VP principle, widely used in exercise science. It breaks exercise down into six independently adjustable “dials.” Turn different dials, and the stimulus and adaptation your body experiences change accordingly.

• F (Frequency): How many times per week you train.
• I (Intensity): How heavy or how breathless the effort is.
• T (Time): How long each session lasts.
• T (Type): Which kind of exercise you do.
• V (Volume): Frequency × intensity × time combined—your total accumulated exercise load for the week.
• P (Progression): How you gradually increase the load as your body adapts.

The original version only had the first four FITT elements; later, exercise science added “volume” and “progression” to form the modern FITT-VP framework (see the ACSM references at the end of this article). These six dials are all the parameters you can adjust when writing a prescription. Understand them, and you upgrade from “blindly following someone else’s plan” to “knowing how to fine-tune for yourself.”

Know the Baseline First: The International Minimum Effective Dose

Before turning the dials, know “how much you need to move at minimum.” The World Health Organization’s (WHO) 2020 physical activity guidelines give adults a very clear minimum recommendation (see references at the end of this article):

• At least 150 to 300 minutes of moderate-intensity aerobic activity per week, or 75 to 150 minutes of vigorous-intensity aerobic activity, or an equivalent combination of the two.
• Strength training on at least 2 or more days per week, covering all major muscle groups.
• For additional health benefits, you can increase moderate-intensity aerobic activity to more than 300 minutes per week.

I often tell my students that this is the “passing line,” not the “full-marks line.” 150 minutes of moderate-intensity activity per week works out to roughly “30 minutes of brisk walking a day, five days a week”—the bar isn’t actually that high. Many people think exercise has to be grueling to be effective, but simply and consistently hitting this baseline already delivers very real benefits for blood pressure, blood sugar, body weight, and mood. First, aim for steady achievement of the baseline; then talk about advancing.

How to Gauge Intensity? Three Practical Methods

Of the six dials, “intensity” is the one most people get wrong. Too light and it’s ineffective; too heavy and you risk injury or burnout. Here are three methods, ranging from simple to more complex—pick any one that works for you.

Method	How to Judge	Moderate Intensity (Approx.)	High Intensity (Approx.)	Best For
Talk Test	Whether you can speak while exercising	Breathing hard but can still speak in full sentences	Can only utter a few words at a time	Complete beginners, those who don’t want to wear a watch
Rating of Perceived Exertion (RPE 0-10)	Subjective feeling of how hard it is	Around 4 to 6	Around 7 to 8	Those who want a simple way to quantify effort
Heart Rate Method (% of max HR)	Using a heart rate monitor or fitness band	About 64% to 76% of max HR	About 77% to 95%	Those with devices who want precision

For the heart rate method, there’s a common rough formula for max heart rate: “220 minus your age.” For example, a 40-year-old would have a max HR of about 180 bpm, putting their moderate-intensity zone roughly between 115 and 137 bpm. But I want to emphasize: this formula is just a “reference range.” Individual variation can be plus or minus 10 bpm or more—some people naturally have higher or lower heart rates. So I usually advise my clients to use the “Talk Test” and “RPE” as the primary guides, with heart rate numbers as a supplement, rather than being a slave to the number on the watch. Giving a range, not false precision, is a crucial attitude when prescribing exercise.

Practical Approach: A Three-Step Guide to Writing Your Own Prescription

Now that we’ve covered the theory, let’s get hands-on. Here are the three steps I use with all my clients to create their own exercise prescription.

Step 1: Honestly Assess Your Starting Point

No assessment, no personalization. You need to know where you stand before you know where you’re going. I recommend checking at least these things:

• Health Risks: Do you have heart disease, high blood pressure, diabetes, old joint injuries, or a family history of cardiovascular disease? Are you past middle age and have been sedentary for a long time? If you answer yes to any of these, talk to a doctor before starting a regular exercise routine. This isn’t meant to scare you; it’s about being responsible.
• Current Activity Level: How many times a week do you actually break a sweat right now? Be honest—count “walking to the convenience store” separately from “exercise.”
• Baseline Fitness: Can you walk briskly for 30 minutes without stopping? Can you do 10 bodyweight squats and 10 wall push-ups? These simple self-tests can give you a rough idea of your starting point.
• Lifestyle Constraints: How many time slots can you realistically carve out each week? What facilities are nearby (riverside paths, parks, school tracks, gyms, or just your living room)? Taiwan’s summers are hot and humid with frequent afternoon thunderstorms, so your time slots and venues need to match the weather.

I often say the best exercise prescription isn’t the theoretically perfect one—it’s the one you can “actually stick to.” A parent with two kids who can only squeeze out 20 minutes in the living room each day is doomed to fail if you insist on a five-days-a-week gym schedule.

Step 2: Use the FITT-VP Framework to Draft Your First Plan

Once you’ve assessed, fill in the six dials. Here are three sample plans for different starting points—you can find the closest match and tweak it.

Profile	Frequency	Intensity	Time	Type	Weekly Volume Goal
Sedentary beginner (the “A-Hong” type)	Cardio 3 days, strength 2 days	Moderate (can talk but breathless)	Cardio 20-30 min/session, strength 20 min/session	Brisk walking or stationary bike, resistance bands & bodyweight	Start with ~75-90 min of cardio
Office worker with some base	Cardio 3-4 days, strength 2-3 days	Mix of moderate and high	Cardio 30-40 min/session, strength 30-40 min/session	Jogging or cycling, machines or dumbbells	150+ min of cardio
Enthusiast looking to advance	Cardio 4-5 days, strength 2-3 days	Includes high-intensity intervals	Cardio 40-60 min/session, strength 40-60 min/session	Interval riding, long distances, heavy weights	250-300+ min of cardio

Take A-Hong as an example. I didn’t have him aim for 50 kilometers right away. The first prescription I gave him was: three days a week of brisk walking by the riverside or on a stationary bike, 25 minutes each time, with intensity controlled at “breathless but able to speak a full sentence.” On the other two days, he did 20 minutes of resistance band and bodyweight training, focusing on thighs, glutes, back, and core. That’s it. It looks minimal, but this is the “starting dose”—first, let the body get reaccustomed to being used, then we talk about increasing.

Step 3: Plan Progression—This Is the Real Key

Many prescriptions don’t fail at the starting point; they fail because they “stay at the starting point forever” or “increase too quickly.” Progression is what makes this prescription breathe and grow.

The general rule I give my clients is: “Turn only one dial at a time, and increase by a small amount each time.” In exercise science, there’s a commonly cited rough principle: don’t spike your weekly training volume too drastically, giving your body time to adapt. In practice, here’s what I do:

• Increase frequency or time first, then intensity. For example, after A-Hong adapts for two weeks, we first extend his brisk walk from 25 to 35 minutes, or increase from three days a week to four, while keeping intensity unchanged.
• Review every 2 to 4 weeks. If the same plan starts feeling noticeably easier (RPE drops from 6 to 4), that’s a sign your body has adapted and it’s time to increase the load.
• Cut back if you’re stuck or overtired. Consecutive poor sleep, lingering soreness, irritability, or an unusually high morning heart rate are all warning signs of “increasing too fast.” It’s time to step back a level, or even schedule a deload week.

Progression isn’t a straight line; it’s more like a spiral staircase—add a bit, stabilize, add a bit more, with room to step back and rest in between. It took me three months to take A-Hong from “breathless after a 25-minute brisk walk” to “able to jog continuously for 20 minutes and ride 30 kilometers without knee swelling,” and he also lost six kilograms. It was slow, but he didn’t get injured again, and he’s still riding to this day. That’s what a successful prescription looks like.

Common Mistakes and Fixes: The Landmines I See Most Often on the Sidelines

Over these fifteen years, I’ve seen the same mistakes over and over. Here’s a comparison table to help you avoid them—do this, and you’ll be ahead of 80% of people.

Common Mistake	Why It’s Harmful	How to Fix It
Going all out on day one	Body can’t adapt, soreness and injury scare you off	Start with a “starting dose”; better to feel it’s too light
Only doing cardio, no strength training	Loses muscle, lowers metabolism, increases injury and fall risk	Do at least 2 days of full-body strength training per week
Intensity never changes	Body adapts and plateaus, no more progress	Review every 2-4 weeks and tweak one dial
Skipping warm-up and cool-down	Higher injury risk, slower recovery	Set aside 5-10 minutes before and after each session
Pushing through unresolved soreness	Accumulates fatigue, leads to chronic injury	Learn to tell “good soreness” from “bad pain”; rest when needed
Copying someone else’s plan	Different starting points and goals, doesn’t fit	Adjust any plan based on your own assessment
Ignoring sleep and nutrition	Training stimulus can’t translate into adaptation	Treat sleep and diet as part of the prescription

I want to take a moment to clearly explain the difference between “good soreness” and “bad pain,” because this is where beginners get most confused and most often injured. Muscle soreness one to two days after exercise, tightness when pressed, but easing up as you move—this is usually normal delayed onset muscle soreness (DOMS) and will resolve on its own. But if it’s a sharp, stabbing pain in a joint (knee, ankle, shoulder, lower back), pain that worsens with movement, or accompanied by swelling and heat, that’s not “a good workout”—that’s “damage.” In the latter case, stop, observe, and see a doctor if necessary. Don’t tough it out through sheer willpower.

In Taiwan, medical access is convenient and National Health Insurance coverage is high—this is actually our advantage. If knee pain lasts more than a week or two without improvement, or hurts enough to affect walking, stop self-diagnosing online. See a rehabilitation or orthopedic specialist, or get assessed by a physical therapist. That’s far more effective than randomly slapping on pain patches or popping painkillers. Part of an exercise prescription is knowing when to hand your body over to the professionals.

Warm-Up and Cool-Down: The Ten Minutes Most People Skip, Yet Should Never Be Skipped

I have to dedicate an entire section to warm-ups and cool-downs because these are the parts beginners most often skip “to save time,” and the parts most likely to cause injury or poor recovery as a result. A well-designed prescription without a warm-up and cool-down is like taking the right medicine without water—its effectiveness is reduced, and it might even upset your stomach.

The purpose of a warm-up is simple: raise body temperature, lubricate the joints, gradually elevate heart rate, awaken the nervous system, and smoothly transition the body from “rest mode” to “exercise mode.” A good warm-up typically has two parts: first, 3 to 5 minutes of light cardio (brisk walking progressing from a slow walk, or low-resistance spinning) to gently bring the heart rate up; then, dynamic stretching and movement preparation, such as high knees in place, leg swings, shoulder circles, and bodyweight squats, targeting the muscles and joints you’re about to use. Note that long-duration static stretching (holding a muscle stretched for fifteen to twenty seconds) is not recommended before exercise—research suggests it may temporarily reduce muscle force output. Save static stretching for the cool-down.

The cool-down helps the body “land.” Right after exercise, your heart rate and blood flow are still elevated. If you stop abruptly and sit down, blood can pool in your lower extremities, and some people feel dizzy. The correct approach is to spend about 5 minutes gradually decreasing the intensity, letting your heart rate slowly come down, and finally performing static stretches for the major muscle groups, gently holding each for 15 to 30 seconds to promote relaxation and maintain flexibility. In all my years coaching athletes, those who developed the habit of warming up and cooling down experienced noticeably less soreness and far fewer injuries. These ten minutes aren’t a waste; they’re an investment.

Advanced Concept: Periodization—Preventing Progress from Plateauing

The “progression” discussed earlier is a short-term logic of increasing load. But once you’ve trained for a few months and your body is on track, you’ll need longer-term planning—this is called “periodization” in sports science. In plain terms, it means dividing training into different phases, allowing the body to systematically handle stress and then systematically recover, avoiding the stagnation or overtraining caused by prolonged maximal load.

Let me walk you through the most basic periodization concept with a four-week cycle:

Week	Phase	Volume/Intensity	What the Body Is Doing
Week 1	Accumulation	Moderate volume, moderate intensity	Building the base, accumulating stimulus
Week 2	Accumulation	Volume slightly increases	Continuing to apply stress
Week 3	Intensification	Volume or intensity rises to a peak	Giving the body the biggest adaptation signal
Week 4	Deload	Clearly reduced to about 60–70% of normal	Letting the body absorb the first three weeks of training, supercompensation

This rhythm of “three weeks of loading, one week of deloading” is the basic framework for many endurance athletes. The key lies in that “deload week”—many people think resting is being lazy, but training gains don’t happen in the moment you’re sweating; they happen during recovery, when the body repairs and gets stronger. I often tell my athletes: “You don’t get stronger by training more; you get stronger by recovering better.” Someone who knows how to schedule deloads and is willing to rest will progress faster in the long run than someone who grinds hard every single day.

Of course, if your goal is simply to maintain health and meet the WHO baseline, you don’t need to make it this complicated. Periodization is an advanced tool for those with specific performance goals (setting records, completing long-distance challenges). Just know it exists, and you can dive deeper when you need it.

Special Populations: Prescriptions for Seniors and Those with Chronic Conditions

Taiwan is aging rapidly, and I’ve coached many students who are writing prescriptions for their parents, or even for themselves as seniors, so I want to address this specifically. Seniors absolutely can—and should—exercise, and the benefits are enormous: strength training combats sarcopenia and reduces the risk of falls and fractures, while aerobic exercise maintains cardiovascular and brain function. But the focus of the prescription will differ from that of younger people.

For seniors, my principles are “strength and balance first, conservative intensity, slow progression.” The sports science recommendations are roughly: at least 2 days per week of full-body strength training, plus regular balance practice (such as single-leg stands or heel-to-toe walking in a straight line). For cardio, focus on tolerable activities like brisk walking, power walking, swimming, or stationary cycling. Intensity doesn’t need to be breathless; the key is accumulating stable, regular, and safe exercise. Exercise selection should also avoid high-impact movements that place too much stress on the joints.

If the senior has chronic conditions like hypertension, diabetes, heart disease, or joint degeneration, be even more conservative and absolutely discuss it with their primary care physician first, factoring in medication, blood pressure and blood sugar monitoring, and potential risks during exercise. In this case, the exercise prescription isn’t about “the harder, the better,” but rather “move safely, move regularly, move for the long term.” Medication and disease management are the physician’s expertise; we handle the exercise side properly, and the two working together is the most responsible approach for our elders.

Adapting to the Taiwanese Context: Putting the Prescription into Your Daily Life

No matter how good a prescription is, it’s useless if it can’t be implemented. Taiwan has its own environment, and I always factor this in when coaching students.

Dealing with Heat, Humidity, and Afternoon Thunderstorms

Taiwan’s summers are hot and humid, especially from May to September, with frequent afternoon thunderstorms. This significantly impacts training schedules. My advice: in summer, schedule cardio in the cooler early morning or evening hours, avoiding the midday heat; check the weather before outdoor exercise, and dial down the intensity in hot, humid conditions—don’t stubbornly chase your pace. Hydrate proactively; don’t wait until you’re thirsty. For prolonged heavy sweating, pay attention to electrolyte replacement. On days with actual rain or poor air quality (PM2.5 purple alerts), switch the workout indoors: the gym, spinning, or bodyweight training at home are all good options. A prescription with a backup plan won’t be derailed by the weather.

Nutrition for People Who Eat Out Frequently

An exercise prescription can’t only address movement and ignore eating. Eating out is convenient in Taiwan, but making it support your training requires some awareness. A few practical principles:

• Get enough protein: To build muscle or prevent muscle loss, aim for a clear protein source at every meal (chicken breast, tofu, eggs, fish, lean meat). You can actually piece this together at buffet restaurants and bento shops.
• Don’t fear carbs, just choose wisely: People who exercise need carbs as fuel. Swap some white rice for sweet potato, brown rice, or whole grains for more stable blood sugar.
• Fuel around workouts: Eat some easily digestible carbs one to two hours before longer sessions, and within 30 to 60 minutes after exercise, consume protein plus carbs to aid recovery.
• Be careful with hand-shaken drinks: A full-sugar hand-shaken drink can easily be 200–300 kcal—one drink can undo all the sweat from a hard workout. If you want one, go with less sugar and a smaller size.

This isn’t about being penny-pinching or developing food anxiety; it’s about aligning eating with training. Nutritional details vary by individual—if you have specific needs (weight loss plateaus, chronic conditions, muscle gain), consulting a dietitian individually will be more precise. I often remind my students not to fall into the trap of “I exercised, so I can eat whatever I want,” nor to go to the other extreme of starving yourself until you have no energy to train. Diet is the support system for training, not a punishment or a reward. Finding the balance where you “have the energy to train without overdoing it” is the sustainable way to eat.

On hydration, let me add one more reminder, because Taiwan’s humidity means the risk of dehydration is higher than many people think. A practical approach: drink about 300 to 500 ml of water before exercise, sip some every 15 to 20 minutes during exercise, and replenish based on sweat loss afterward. For prolonged exercise lasting over an hour with heavy sweating, supplement with electrolyte drinks in addition to plain water, to avoid hyponatremia from replacing water without salt. The simplest indicator of adequate hydration is urine color—pale yellow is just right; dark yellow means you’re not drinking enough.

Great Free Venues

Taiwan actually has abundant exercise resources. Riverside bike paths in every city and county, school tracks (most are open to the public), simple fitness equipment in community parks, and hiking trails are all free options. Sports centers are also affordably priced. When writing a prescription, including venues that are “nearby, free, and weather-switchable” will greatly improve adherence. I often say the best gym is the one where you “can’t be bothered to make excuses not to go.”

Actionable Advice for Readers at Different Levels

By now, you might still be wondering, “So what exactly should I do right now?” Here are first steps you can start today, based on three levels.

If You’re a Complete Beginner (Currently Barely Exercising)

Don’t overthink it, and don’t buy a bunch of gear. Your first-week prescription is very simple:

• Pick 3 days a week, brisk walk for 20 minutes each time, keeping the intensity at “breathless but able to talk.”
• On 2 other days, do 15 minutes of bodyweight training: bodyweight squats, wall push-ups, and planks, doing as many reps as you can manage.
• The goal isn’t to get stronger; it’s to “build the habit and let your body get used to being used again.”
• Survive two weeks before talking about increasing volume. If you have chronic conditions, haven’t been active in a long time, and are middle-aged or older, talk to your doctor first.

If You Already Have an Exercise Habit (But Train Casually)

Your problem usually isn’t inactivity, but rather “a lack of structure and stalled progress.” Here’s what we suggest:

• Use FITT-VP to take stock of your current exercise routine and see which of the six dials hasn’t been adjusted in a long time.
• Check for imbalances: only running without strength training? Only lifting weights without cardio? Fill in the missing piece.
• Build a habit of “reviewing every 2-4 weeks and fine-tuning one dial” to give your training a rhythm of progression.
• Start tracking. Even just jotting down what you did and how you felt in your phone’s notes app will let you see your growth when you look back.

If You’re an Advanced Enthusiast (Looking to Break Through Performance)

You need more detailed periodization and recovery management:

• Divide your training into “accumulation—intensification—tapering” phases; don’t keep yourself at full load indefinitely.
• Take recovery seriously: sleep, nutrition, and deload weeks are just as important as the training itself.
• Introduce objective monitoring (such as morning resting heart rate, heart rate variability, and perceived fatigue) and use the data to decide whether to push forward or back off.
• Clarify your goals: whether it’s breaking a marathon personal record or completing a long-distance challenge, the prescription should be designed backward from that goal.

Frequently Asked Questions (FAQ)

Q: I’m very busy. What if I really can’t find time in a week?
A: First aim for something, then aim for better. Research repeatedly shows that accumulating exercise in short bouts is just as effective. A 10-minute brisk walk during your lunch break, getting off the bus one stop early on your commute, or doing a few bodyweight sets while watching TV—all these fragmented activities count. Don’t let “not having a solid block of time” become an excuse to do nothing at all.

Q: Do I have to go to a gym or buy equipment?
A: No. Bodyweight training (squats, push-ups, planks, lunges) plus a resistance band is enough to get a very effective workout at home. Cardio barely even needs a venue. Equipment is a bonus, not a barrier.

Q: How long until I see results?
A: Mood and sleep usually improve within a few weeks; fitness and endurance take about 4 to 8 weeks; noticeable changes in body composition and strength typically take 8 to 12 weeks or more. An exercise prescription is compound interest, not a miracle drug. Consistent, steady effort matters far more than short-term intense training.

Q: I have high blood pressure/diabetes. Can I write my own prescription?
A: You can, but you must first discuss it with your primary care physician and factor in your medications and blood sugar/blood pressure monitoring. Exercise is usually very helpful for these chronic conditions, but intensity planning, exercise timing, and the risks of hypoglycemia or blood pressure fluctuations need individualized assessment. In this case, “see a doctor first, then get a prescription” isn’t an option—it’s a must.

Q: Can I just do cardio and skip strength training? I only want to lose weight.
A: Highly not recommended. Simply dieting plus lots of cardio for weight loss often leads to losing muscle along with fat, resulting in a worse metabolism, a flabby physique, and a higher chance of regaining the weight. Strength training can preserve or even build muscle, maintain your basal metabolic rate, and make your body look tighter even if the number on the scale doesn’t drop much. For long-term, healthy weight management, both cardio and strength training are essential. Weight loss is a redistribution of body composition, not just a number on the scale.

Q: Do I have to exercise every day? Will resting undo all my progress?
A: Absolutely not—you don’t need to exercise daily, and rest definitely doesn’t undo your progress. As mentioned earlier, progress happens during recovery. For most people, exercising regularly 3 to 5 days a week with rest days in between works far better than pushing through every single day. Rather than chasing the perfection of “doing it every day,” aim for the consistency of “hitting your weekly targets steadily without long interruptions.” A prescription that can last is a good one.

Q: My heart rate spikes very high when I exercise. Is that dangerous?
A: An elevated heart rate during exercise is normal. The key is whether it’s accompanied by discomfort. If you’re just out of breath and your heart is beating fast, but you have no chest tightness, chest pain, dizziness, or cold sweats, it’s usually a normal response. However, if you experience any of those symptoms, stop and rest immediately—don’t push through. If they recur, seek medical evaluation. People with a history of cardiovascular disease or a family history of it should get a cardiac assessment before starting a regular exercise routine. Safety always comes before performance.

Conclusion: The Prescription Is Alive—You Are the Doctor

Back to A-Hong from the beginning. Three months later, not only had he avoided re-injury, but he’d also gotten colleagues to join him for riverside cycling, and the red flags on his health check-up were starting to improve. One thing he said to me I’ve never forgotten: “I realized exercise isn’t about going all out once—it’s about a little bit every day.”

That’s the core spirit of an exercise prescription. It’s not a rigid, fixed schedule; it’s a plan that continuously fine-tunes itself based on your body’s feedback. You assess your starting point, fill in the first version with FITT-VP, arrange progressive overload, avoid common pitfalls, and ground it in your real life in Taiwan—and then, most importantly, you start, and you keep going.

You don’t need a perfect prescription; you need one that “you will actually follow.” Write one for yourself today. Even starting with a 20-minute brisk walk is fine. Your body will slowly reward you with progress.

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This article is for educational purposes and cannot replace individual diagnosis and treatment advice from a physician, physical therapist, or nutritionist. If you have chronic conditions such as heart disease, high blood pressure, or diabetes, or if you experience abnormalities during exercise such as chest tightness, dizziness, or severe joint pain, stop immediately and seek medical attention as soon as possible.

References

• World Health Organization — WHO guidelines on physical activity and sedentary behaviour (2020): https://www.who.int/europe/publications/i/item/9789240014886
• WHO 2020 guidelines on physical activity and sedentary behaviour (PMC full text): https://pmc.ncbi.nlm.nih.gov/articles/PMC7719906/
• CDC — Adult Activity: An Overview: https://www.cdc.gov/physical-activity-basics/guidelines/adults.html
• ACSM — Exercise Testing and Prescription (FITT-VP principles and exercise prescription): https://acsm.org/education-resources/books/exercise-testing-prescription/

Related Reading

• The Science of Exercise Prescription: Using the FITT-VP Principle to Turn “Exercise More” into a Readable Plan
• Exercise and Depression: A Natural Antidepressant Prescription—Effects, Mechanisms, and How to Dose It
• Exercise and Cancer: From Prevention to Recovery—A Sports Science Consultant’s Practical Prescriptions and Training Plans
• Exercise and Stress Management: A Coach’s Guide to Using Physiological Mechanisms and Daily Exercise Prescriptions to Ride Stress Back into a Controllable Range