Cardio Workout: Everything you need to know to improve your endurance

What is a cardio workout?

The term "cardio" is short for "cardiovascular". It refers to physical activities that sustainably increase heart rate and engage the respiratory system.

Specifically, when a person runs, cycles, swims, or performs continuous dynamic movements, the heart pumps more blood to deliver more oxygen to the muscles. This adaptation allows the body to produce the energy needed for the effort.

Unlike strength training exercises, which primarily aim to develop strength and muscle mass, cardio exercises emphasize endurance and the body's ability to sustain effort over time.

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Why is cardio important for the body?

Cardiovascular activity is not limited to burning calories. Its positive effects concern many aspects of the body.

The benefits of regularly practicing cardio are:

• improved endurance,
• improved respiratory capacity,
• better blood circulation,
• reduced daily fatigue,
• better stress management,
• increased energy expenditure.

Another advantage of cardio is its great accessibility. A simple brisk walk can already be an effective cardiovascular workout when practiced regularly.

What exercises can be done for cardio?

Contrary to popular belief, running is not the only way to work on your cardio.

Brisk walking

Often underestimated, brisk walking is an excellent cardiovascular exercise.

It offers several advantages:

• low impact on joints,
• accessible to beginners,
• easy to integrate into daily life,
• requires little equipment.

Running

Running remains one of the most popular activities for developing endurance.

It quickly increases heart rate and improves cardiovascular capacity.

Cycling

Cycling, outdoors or on an exercise bike, primarily targets the lower body while limiting joint stress.

It is suitable for both beginners and experienced athletes.

Jump rope

A few minutes of jump rope are often enough to get your heart rate up.

This exercise simultaneously develops:

• endurance,
• coordination,
• agility.

Rowing machine

The rowing machine is often considered one of the most comprehensive fitness machines.

It engages a large part of the muscle groups while providing significant cardiovascular work.

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Home cardio exercises: The best options without equipment

Not having a gym membership is not an obstacle.

Many home cardio exercises can be done with little to no equipment.

Jumping jacks

This exercise involves jumping while simultaneously opening your arms and legs.

Simple and effective, it quickly raises your heart rate.

High knees

High knees strongly engage the cardiovascular system and leg muscles.

Burpees

Burpees combine several movements:

• squat,
• plank,
• jump.

They provide excellent cardio work while engaging the entire body.

Mountain climbers

Mountain climbers combine cardio and strength training in one exercise.

Beginner home cardio exercises: How to start?

Beginners often make the same mistake: wanting to go too fast.

To make lasting progress, it is better to gradually increase the difficulty.

Beginner session example

Perform:

• 30 seconds of active marching in place,
• 30 seconds of slow high knees,
• 30 seconds of step touches,
• 30 seconds of rest.

Repeat the circuit 4 to 6 times.

This approach allows the body to adapt gradually without causing excessive fatigue.

Common mistakes

Beginners should avoid:

• sessions that are too long,
• excessive intensities,
• lack of recovery,
• lack of warm-up.

Consistency is more important than intensity during the first few weeks.

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Gym cardio exercises: What equipment to choose?

Gyms offer several pieces of equipment that are particularly interesting for working on endurance.

Treadmill

The treadmill allows you to:

• precisely control speed,
• adjust incline,
• easily adapt intensity.

Elliptical machine

The elliptical machine replicates a fluid motion that reduces joint impact.

It is particularly suitable for people looking for a low-impact cardio activity.

Indoor cycling

Indoor cycling allows you to easily adjust the intensity of your effort.

It is particularly popular in fitness programs.

Rowing machine

The rowing machine remains one of the most complete pieces of equipment for simultaneously developing endurance and general physical fitness.

Cardio exercise: How long?

This is probably one of the most frequent questions.

• 30 minutes of brisk walking five days a week;
• or 25 minutes of running three to five times a week.

For a beginner, 15 to 20 minutes per session can already be an excellent starting point.

The important thing is not to immediately seek performance, but to establish a sustainable habit.

How to improve your cardio?

Improving endurance is based on a simple principle: progression.

Gradually increase volume

Each week, it is possible to slightly increase:

• duration,
• distance,
• or the number of sessions.

This gradual progression limits the risk of injury.

Introduce interval training

Interval training involves alternating phases of intense effort with periods of recovery.

For example:

• 30 seconds fast,
• 60 seconds slow.

This method is widely used to improve cardiovascular capacity.

Combine cardio and strength training

Contrary to some misconceptions, cardio and strength training are not mutually exclusive.

They are complementary.

Adapted strength training improves movement efficiency and can contribute to better cardiovascular performance.

Optimize recovery

Progression does not only happen during training.

Sleep, nutrition, and hydration also play an essential role.

How to choose cardio exercise and when to do it?

The best cardio exercise is not necessarily the one that burns the most calories or seems the most intense. It is above all the one that corresponds to your level, your goals, and that you can practice regularly over the long term.

The choice of activity primarily depends on the desired outcome.

• To promote weight loss, exercises that engage large muscle groups and increase energy expenditure are often recommended. Running, rowing, jumping rope, or even HIIT cardio (high-intensity interval training) can be particularly effective when combined with an appropriate diet.

• To improve cardiovascular endurance, activities performed over an extended period at moderate intensity are generally preferred. Running, cycling, swimming, or rowing gradually strengthen the heart and lung capacity while developing resistance to effort.

• To resume physical activity after a period of inactivity, it is preferable to start with low-impact joint exercises. Brisk walking, stationary cycling, swimming, or classic cycling allow the body to get moving again while limiting stress on the joints.

• To complement a strength training program, cardio can help improve general physical fitness, support recovery between sets, and develop endurance. Low-to-medium intensity sessions, such as incline walking on a treadmill, cycling, or rowing, are often used to complement strength training.

When to do your cardio?

There is no universally ideal time to perform cardio exercise. The best slot is generally the one that easily fits into your schedule and promotes regularity.

Some people enjoy cardio in the morning to start the day with more energy, while others prefer to train in the late afternoon or evening when their physical performance is optimal.

Within a strength training program, several approaches are possible:

• perform cardio after the strength training session when the primary goal is muscle development,
• perform cardio in a separate session to optimize recovery,
• combine both in the same session when time is limited.

The essential thing is to maintain a regular practice adapted to your abilities. In the long term, consistency generally produces more results than choosing the precise time of day.

Mistakes to avoid during a cardio workout

Certain habits can slow down progress.

Neglecting warm-up

A gradual warm-up prepares the muscles and cardiovascular system for effort.

Always doing the same workout

Variety promotes progression and reduces boredom.

Ignoring body signals

Persistent fatigue or unusual pain should lead to temporarily reducing intensity or seeking professional medical advice.

Wanting to burn as many calories as possible immediately

Cardio should be considered a long-term endeavor.

The most lasting results are generally obtained through regularity rather than extreme efforts.

Cardio exercise, everything you need to know to improve your endurance: In summary

Cardio exercise is an excellent way to improve endurance, strengthen your cardiovascular system, and support your body. Accessible to all levels, it can be practiced in many forms, whether through brisk walking, running, cycling, rowing, swimming, or home cardio exercises.

The choice of activity primarily depends on your goals, your physical condition, and your preferences. Some people seek better endurance, others want to increase their energy expenditure or complement a strength training program. Whatever the motivation, the benefits generally appear when the practice is regular and progressive.

It is not necessary to do particularly long or intensive sessions to get results. A few workouts adapted to your level, done each week, can already help improve cardiovascular capacity, a more balanced lifestyle, and daily physical fitness.

Finally, remember that cardio progress is built over time. By choosing exercises that you enjoy and that you can sustainably integrate into your routine, you put yourself in the best position to develop your endurance and maintain an active lifestyle in the long term.