One of the most common questions people ask when they’re starting to exercise is how often they should do cardio.
Some fitness plans recommend exercising every day, while others suggest only a few sessions each week. It’s easy to wonder which approach is right.
The truth is that there isn’t one perfect number that works for everyone.
How often you should do cardio depends on your current fitness level, your goals and how active you already are. Someone training for a marathon will have very different needs from someone who’s simply trying to become healthier or improve their fitness.
For most teenagers and young adults, the aim isn’t to exercise as often as possible.
It’s to build a routine that’s realistic, enjoyable and sustainable.
This article is part of our Fat Loss & Cardio for Beginners (Healthy & Sustainable) cluster, where we explain how to improve your cardiovascular fitness while supporting healthy body composition. If you’re completely new to exercise, you may also find How to Start Cardio When You’re Unfit and How to Build a Beginner Cardio Routine helpful.
Is There a Perfect Number of Cardio Sessions?
Not really.
Rather than looking for the perfect number of weekly workouts, it’s more helpful to think about consistency.
A routine that you can comfortably maintain for months is usually far more beneficial than exercising every day for two weeks before giving up because it feels too demanding.
Your body adapts to regular physical activity over time.
Those gradual improvements are what strengthen your heart and lungs, improve your endurance and help everyday activities feel easier.
Missing the occasional workout won’t undo your progress, just as one particularly hard session won’t instantly transform your fitness.
Long-term habits are what matter most.
More Cardio Isn’t Always Better
It’s easy to assume that exercising more often automatically produces better results.
In reality, your body also needs time to recover.
Recovery is when your heart, lungs and muscles adapt to the work you’ve been doing, allowing you to become fitter over time.
If you constantly push yourself without allowing enough recovery, you may begin to feel unusually tired, lose motivation or struggle to perform as well during future workouts.
For beginners especially, doing slightly less than you think you can manage is often a smarter approach than trying to do everything at once.
Building your routine gradually makes it much easier to stay consistent over the long term.
How Often Should Beginners Do Cardio?
For many beginners, two or three cardio sessions each week provide an excellent starting point.
This gives your body regular opportunities to improve its cardiovascular fitness while still allowing enough time for recovery between sessions.
Your workouts don’t need to be long or particularly intense.
Brisk walking, cycling, swimming or playing sport can all contribute towards improving your fitness.
As your endurance develops, you can gradually increase the length of your sessions or add another workout if it fits comfortably into your week.
If you’re unsure which activities are most suitable, our guide What Is the Best Type of Cardio for Beginners? compares several beginner-friendly options.
Recovery Is Part of Your Fitness Routine
Many people think rest days are days when nothing happens.
In reality, they’re an important part of becoming fitter.
Recovery allows your body to repair, adapt and prepare for your next workout.
Getting enough sleep, eating a balanced diet and allowing yourself time between harder sessions all support this process.
Instead of feeling guilty about taking a rest day, think of it as another part of your training plan.
A balanced routine that includes both activity and recovery is usually much more sustainable than trying to exercise intensely every day.
How Often Should You Do Cardio for General Health?
If your goal is simply to stay healthy, improve your fitness and support your overall wellbeing, you don’t need to exercise every day.
Regular physical activity spread throughout the week is generally more important than trying to complete long or intense workouts.
For many teenagers and young adults, completing two or three dedicated cardio sessions each week alongside an active lifestyle provides a solid foundation.
Walking to school or college, cycling, playing sports, swimming or simply spending more time moving throughout the day all contribute towards your cardiovascular health.
The important thing is finding activities that fit naturally into your routine so they become habits rather than occasional bursts of motivation.
How Often Should You Do Cardio to Improve Fitness?
If you’re hoping to improve your endurance, you’ll usually benefit from exercising consistently each week.
Most beginners find that two or three sessions allow them to make steady progress without feeling overwhelmed.
As your fitness improves, you may naturally increase to three or four sessions each week if you’re enjoying your routine and recovering well between workouts.
Your progress doesn’t depend solely on exercising more often.
Gradually increasing the duration or intensity of your workouts can also improve your cardiovascular fitness without needing to add extra sessions.
If you’re still deciding which activities to include, our guide What Is the Best Type of Cardio for Beginners? explains the benefits of several beginner-friendly options.
How Often Should You Do Cardio for Healthy Body Composition?
If your goal is to improve your body composition by reducing body fat while maintaining or building muscle, cardio is only one part of the picture.
Strength training, balanced nutrition, good sleep and everyday movement all play important roles as well.
For many beginners, two or three cardio sessions each week combined with regular strength training provides a balanced approach.
This allows you to improve your cardiovascular fitness without spending so much time doing cardio that it becomes difficult to recover or fit strength training into your week.
Our article Does Cardio Help You Lose Body Fat? explains how cardio contributes to healthy fat loss, while Can You Build Muscle and Do Cardio at the Same Time? explores how both goals can work together.
Can You Do Cardio Every Day?
You can, but that doesn’t necessarily mean you should.
Whether daily cardio is appropriate depends on the type of exercise you’re doing, how hard you’re working and how well your body is recovering.
A gentle walk every day is very different from completing a demanding run or high-intensity workout every morning.
Many people enjoy being active every day by mixing different intensities.
For example, you might include brisk walks on some days and more challenging cycling, swimming or sports sessions on others.
This approach allows you to stay active while giving your body opportunities to recover from harder workouts.
Signs You May Be Doing Too Much Cardio
More exercise isn’t always better if your body doesn’t have enough time to recover.
It may be worth reducing your training or taking an extra rest day if you notice that you’re:
- Feeling unusually tired most of the time.
- Struggling to recover between workouts.
- Losing motivation to exercise.
- Finding that your performance is getting worse rather than improving.
- Feeling sore or exhausted for several days after each workout.
Occasionally feeling tired after exercise is completely normal.
However, constantly feeling drained may be a sign that your body would benefit from more recovery, better sleep or a slightly less demanding routine.
A sustainable fitness plan should leave you feeling healthier and more energetic over time, not permanently exhausted.
Combining Cardio with Strength Training
One of the biggest misconceptions in fitness is that you have to choose between cardio and strength training.
For most teenagers and young adults, that’s simply not true.
Cardio and strength training improve different aspects of your health, and they often work best together.
Cardio helps strengthen your heart and lungs, improves endurance and supports your overall cardiovascular health.
Strength training helps build muscle, supports healthy bones and can improve body composition.
Rather than asking how often you should do cardio on its own, it can be more helpful to think about how all your weekly activity fits together.
A balanced week might include two or three cardio sessions alongside two or three strength-training workouts, with rest or lighter activity between harder sessions.
This approach allows each type of exercise to complement the other while giving your body enough time to recover.
If you’d like to understand this relationship in more detail, read Why Strength Training and Cardio Are Better Together. If you’re planning to complete both during the same workout, Should You Do Cardio Before or After Weights? explains how to decide which order is best for your goals.
Your Routine Should Change as Your Fitness Improves
The number of cardio sessions that feels right today may not be the same in six months’ time.
As your fitness improves, you’ll probably find that activities which once felt challenging become much easier.
That doesn’t automatically mean you need to exercise every day.
Instead, you might:
- Exercise for slightly longer.
- Increase the pace of your workouts.
- Try a new activity.
- Add another weekly session if it comfortably fits your lifestyle.
The important thing is that your routine continues to feel manageable.
Small, gradual changes are usually much easier to maintain than making several big changes at once.
Common Mistakes When Deciding How Often to Do Cardio
Comparing Yourself to Other People
It’s easy to look at athletes, influencers or experienced gym-goers and assume you should be exercising as often as they do.
Remember that everyone starts from a different place, and many of those people have spent years building their fitness.
Your routine should reflect your own goals, experience and lifestyle—not someone else’s.
Thinking More Is Always Better
Doing cardio every day isn’t automatically healthier than exercising three times each week.
Quality, consistency and recovery all matter.
A routine that’s balanced and sustainable will usually deliver better long-term results than one that’s difficult to maintain.
Ignoring Everyday Activity
Many people only count structured workouts as exercise.
However, walking to school or college, cycling to work, playing with friends, hiking or participating in sports all contribute towards your overall activity levels.
Those everyday movements are an important part of maintaining good cardiovascular health.
If you’re wondering whether walking alone can make a difference, our guide Is Walking Enough Cardio? explains when walking may be all you need and when you might benefit from adding more variety.
Final Thoughts
There’s no perfect number of cardio workouts that everyone should aim for.
For most beginners, two or three sessions each week provide an excellent starting point.
From there, you can gradually adjust your routine as your fitness improves, your confidence grows and your goals change.
Remember that successful fitness routines aren’t built by doing as much exercise as possible.
They’re built through consistency, sensible progression and allowing your body enough time to recover.
If you can create a routine that fits comfortably into your everyday life, you’re much more likely to stay active for months and years to come.