How Much Exercise Do You Really Need?

As one of your neuro-musculoskeletal health care providers, part of my role is to share guidance that supports your physical health. Sometimes that means clinical information, such as a diagnosis, injury explanation, treatment plan, or rehabilitation advice. Other times, it means general lifestyle guidance around sleep, nutrition, movement, and exercise.

This article focuses on exercise, and it applies to almost everyone. It is relevant if you consider yourself an athlete and want to optimize your training. It is also relevant if you rarely think about exercise but know it is supposed to be good for your health. And it is relevant if you simply want to move better, feel better, stay healthy, and look good.

Why Exercise Matters for Long-Term Health

Exercise is one of the most powerful health behaviors you can engage in. While our health care system is designed to help when people are sick, true health also depends on prevention. Exercise plays a major role in helping prevent illness, improving function, supporting longevity, and keeping the body resilient.

Sleep is another major piece of the health equation. Sleep quality, sleep quantity, and sleep consistency all affect how your body recovers, adapts, and performs. If your sleep is poor, improving your bedtime routine, calming your mind before bed, and reducing screen time at night can make a meaningful difference.

Exercise and sleep are also closely connected. Healthy behaviors tend to build on each other. Better sleep may make you more likely to exercise, and regular exercise may help improve your sleep. The key is finding your own gateway habit that helps the rest of your health behaviors follow.

Common Exercise Questions

Patients often ask:

Which activities are best for health?

How much time do I really need to exercise?

Can I just do cardio?

Do I have to strength train?

Does walking count?

Does cycling to work count?

Does my heart rate have to be high?

The simple answer is that exercise does not need to be complicated. The best approach is usually the one you can do consistently.

How Much Exercise Should You Do?

The best answer is: as much as you reasonably can.

The more purposeful physical activity you do, the better you are likely to feel and the more health benefits you are likely to gain. Most of us live in a world that is highly distracting and less physically demanding than it used to be. Television, phones, social media, desk work, and long periods of sitting have made intentional movement more important than ever.

That does not mean you should exercise to exhaustion every day. Your nervous system needs balance. Moderate to vigorous exercise activates the sympathetic nervous system, often described as “fight or flight.” That needs to be balanced with recovery, rest, and parasympathetic activity, which is the “rest and relax” side of your nervous system.

What Type of Exercise Is Best?

The best activity is the one you are most likely to do consistently.

If you enjoy cycling, cycle. If you enjoy walking, walk. If you enjoy swimming, swim. If you like yoga, strength training, fitness classes, or hiking, those all count too. If you do not currently enjoy exercise, the goal is to find a way to make movement more enjoyable and sustainable.

Consistency matters more than chasing the perfect workout.

Cardio vs. Strength Training: Do You Need Both?

Yes, ideally, you should include both cardio and strength training if you want to optimize your health.

Cardiovascular exercise has strong research support for improving heart, lung, blood, and metabolic health. It is important for longevity and disease prevention.

Strength training is also extremely important, especially as we age. It helps maintain muscle mass, improve bone density, support joint function, and preserve independence. Strength training and cardio both count as physical activity, but they benefit the body in different ways.

Weekly Exercise Recommendations

The American College of Sports Medicine recommends:

• 150 to 300 minutes of moderate aerobic exercise per week, or 75 to 150 minutes of vigorous aerobic exercise per week.
• Two strength training sessions per week.
• Two to three days per week of motor control, balance, or functional movement training.
  • Functional movement training may include activities such as yoga, tai chi, balance work, or mobility routines like Functional Range Conditioning.

This may sound like a lot, but these categories can overlap. For example, yoga may count as strength, balance, mobility, and sometimes even aerobic exercise if it raises your heart rate enough. Strength training can also include mobility work. You do not need a separate workout for every category.

What About Zone 2 Cardio?

Zone 2 training has become popular because many elite endurance athletes follow an 80/20 approach: roughly 80% of their training is done at an easier aerobic intensity, and about 20% is done at higher intensities.

The problem is that most people are not elite endurance athletes training 25 hours per week. Zone 2 can also be difficult to identify accurately without lab testing, and even lab testing can vary depending on what is being measured.

For most people, it is better not to overcomplicate it. Aim for mostly moderate aerobic exercise, with some vigorous exercise included when appropriate.

A practical way to judge intensity is the talk test. During vigorous exercise, you generally cannot hold a conversation. During moderate exercise, you can probably talk in short sentences, but you would rather not carry on a full conversation.

Does Heart Rate Matter?

Heart rate can be useful if you wear a fitness tracker, heart rate monitor, smartwatch, or similar device. Generally, moderate exercise often falls around 65% to 75% of your estimated maximum heart rate.

However, that does not automatically mean you are in Zone 2. Zone 2 can be defined in different ways, including lactate threshold, breathing changes, and fuel-use changes between fat and carbohydrates. Because of that, heart rate zones are helpful, but they should not become the only thing you focus on.

Does Walking Count as Exercise?

Yes, walking counts as exercise.

However, whether walking is enough depends on your current fitness level and how challenging the walk is for your body. If walking taxes your heart, lungs, and energy systems, it can absolutely count as aerobic exercise.

If walking feels too easy, you can make it more challenging by increasing your pace, walking longer, adding hills, or using a weighted vest if appropriate for your body and health status.

Do You Have to Be Exhausted for Exercise to Count?

No. You do not need to be completely exhausted for exercise to be effective.

A workout does not have to leave you gasping, drained, or sore to be valuable. Moderate, repeatable, consistent exercise is often more useful than occasionally pushing yourself too hard and then needing several days to recover.

Strength Training: Do You Have to Train Every Muscle?

Not necessarily.

Instead of thinking only about individual muscles, it can be more useful to think about movement patterns and body regions.

A well-rounded strength program should include:

Upper body, lower body, and core stability work, including these movements:

• Pushing (eg. push-ups, bench press)
• Pulling (eg. lat pulldown, rows)
• Hinging (eg. deadlift, hip thrusts)
• Squatting (eg. leg press, squats, lunges)
• Carrying (eg. farmer’s carry, suitcase carry, overhead carry)
• Rotating (eg. medicine ball throws, Pallof press)

This can include dumbbells, kettlebells, barbells, resistance bands, bodyweight exercises, or other forms of resistance. The goal is to challenge the body in ways that build strength, control, stability, and resilience.

What If You Do Not Have Enough Time?

Do what you can.

Exercise is not an all-or-nothing game. If you cannot meet every recommendation every week, doing something is still far better than doing nothing. A short walk, a few strength exercises, a mobility routine, or a quick workout all count.

The goal is progress, not perfection.

Final Takeaway

Exercise is one of the most important behaviors for improving health, preventing illness, supporting longevity, and maintaining physical function. The best routine is one you can repeat consistently and adapt to your life.

For most people, the ideal approach includes regular aerobic exercise, strength training, mobility, balance, and recovery. Walking counts. Strength training matters. Cardio matters. Sleep matters. And you do not have to be exhausted for your workout to be worthwhile.

If you have questions about what type of exercise is right for your body, your goals, or your current pain or injury, let’s talk about it during your next visit.