Ferrigno Fitness Cardio Does Cardio Cause Muscle Loss | Does Doing Cardio Cause Muscle Loss

Does Cardio Cause Muscle Loss | Does Doing Cardio Cause Muscle Loss

Summary: Does cardio cause muscle loss? This is a frequently asked question, and the answer is not as straightforward as a yes or no. Depending on various factors, cardio can either support muscle gain or cause muscle loss. In this article, we will look into the various aspects of this topic.

1. Types of cardio

There are two types of cardio that people engage in- steady state and high-intensity interval training (HIIT). Steady-state cardio involves maintaining a consistent heart rate throughout the exercise; it could be the treadmill, cycling, or jogging. On the other hand, HIIT involves bouts of high-intensity exercises with periods of rest in between. Research suggests that HIIT is better at promoting muscle growth than steady-state cardio. Thus, HIIT is less likely to cause muscle loss.

However, that does not mean steady-state cardio should be entirely avoided. It could still be beneficial for overall fitness and fat loss. Bodybuilders who engage in steady-state cardio tend to do so in moderation to maintain optimal muscle mass.

In conclusion, HIIT is preferred over steady-state cardio for fitness enthusiasts who wish to build muscle, but both types of cardio can be used in moderation to support overall fitness goals.

2. Nutrition and diet

Another significant aspect to consider is nutrition. To build muscle, our bodies require adequate protein supplementation. Most athletes consume protein shakes and follow a high protein diet to promote muscle growth. However, if an athlete engages in excessive cardio without proper nutrition, it may cause muscle loss.

When we engage in cardio, our body turns to glycogen stores for energy. If glycogen runs out, our body sources energy from other sources, including muscle tissue, leading to muscle loss. Therefore, it is essential to consume enough calories and carbohydrates to preserve muscle mass while engaging in cardio exercises.

In conclusion, cardio can cause muscle loss when combined with inadequate nutrition. Ensure your diet includes enough carbohydrates and protein supplementation for muscle preservation.

3. Frequency and duration

The frequency and duration of cardio also play a crucial role in determining whether it will cause muscle loss. If an athlete performs high-intensity cardio frequently and for prolonged periods, it could lead to muscle loss. Similarly, if someone combines excessive cardio with weightlifting, they may experience a negative impact on their muscle gain goals.

It is therefore essential to strike a balance between cardio and weight lifting. A good rule of thumb is to limit cardio workouts to 2-3 times a week, with each session lasting about 30 minutes to an hour.

In conclusion, the frequency and duration of cardio need to be controlled to support optimal muscle gain goals. Excessive cardio leading to an increase in cortisol levels, which can impair muscle growth and increase the risk of muscle loss.

4. Genetics and body type

Another important aspect that affects whether cardio will cause muscle loss or not is genetics and body type. Everyone’s body composition is different, and some people have higher muscle potential than others. Besides, individuals with a more mesomorphic body type tend to lose less muscle with cardio than ectomorphic individuals.

Therefore, before deciding on the type, duration, or frequency of cardio, it is essential to consult with a fitness expert to help workout personalized plans tailored to your body type and genetic predispositions.

In conclusion, genetics plays a significant role in determining how cardio affects muscle gain goals. Fitness experts can provide vital guidance on individualized fitness strategies to support muscle gain.

5. Adequate recovery time

Lastly, it is imperative to provide adequate recovery time for muscles after a cardio or weightlifting session. Giving muscles enough time to recover allows them to rebuild and grow bigger and stronger, preventing muscle loss.

If an athlete engages in too much cardio without proper rest, their muscles may not have enough time to recover and grow bigger. Therefore, it is best to avoid performing cardio workouts on consecutive days. Instead, alternate between cardio and weightlifting workouts to allow the body ample time to recover.

In conclusion, adequate recovery time is essential to prevent muscle loss. Engage in cardio and weightlifting workouts with adequate rest periods between sessions to ensure optimal muscle growth.


In conclusion, whether cardio causes muscle loss or not depends on various factors. HIIT is preferred over steady-state cardio for supporting muscle growth, but both can be used in moderation. Adequate nutrition and diet, controlled frequency and duration, genetics, body type, and adequate recovery are crucial considerations to support muscle gain goals. Consult with a fitness expert to help design individualized fitness strategies that incorporate cardio while preserving optimal muscle mass.

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