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Cardio is a great way to improve your endurance and get your heart pumping, but it's a common fear that it will lead to a loss of muscle mass. The good news is that you can do cardio without losing muscle – in fact, it can even help fuel muscle growth. The key is to find a balance between cardio and weight/resistance training, and to ensure you're consuming the right nutrients to support muscle growth and recovery.
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What You'll Learn
Eat a high-protein diet to maintain muscle mass
Consuming a high-protein diet is essential to maintain muscle mass while doing cardio. Here are some reasons why:
First and foremost, protein is a fundamental macronutrient for muscle maintenance and growth. When you engage in cardio, your muscles undergo micro-tearing, and protein provides the essential amino acids needed to repair and rebuild these muscle fibres. This process, known as hypertrophy, is crucial for increasing muscle mass and strength.
Additionally, a high-protein diet boosts your metabolism. Protein requires more energy for your body to digest compared to carbohydrates or fats. This increased energy expenditure helps burn calories and promotes fat loss without sacrificing muscle. It also keeps you feeling fuller for longer, preventing overeating and maintaining a calorie deficit, which is essential for losing fat while preserving muscle.
Moreover, consuming adequate protein ensures your body doesn't break down muscle tissue for energy. When you perform cardio, especially in a fasted state, your body can tap into its protein stores in the form of muscle mass. By ensuring you eat enough protein, you provide your body with the fuel it needs to support muscle growth and maintenance.
To optimise your protein intake, it's recommended to consume between 0.8 and 1 gram of protein per pound of body weight. This amount ensures your body has sufficient protein to support muscle repair, growth, and overall health.
In summary, a high-protein diet is crucial for maintaining muscle mass while doing cardio. It provides the necessary amino acids for muscle repair and growth, boosts metabolism, and prevents muscle breakdown by giving your body the fuel it needs to support your cardio routine and muscle maintenance goals.
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Do resistance training 2-3 times a week
Resistance training is an important factor in maintaining muscle mass while losing weight. It is recommended that beginners train two to three times per week to gain maximum benefit. Research has shown that training three days a week increases peak isometric strength to a greater extent than training two days a week. However, training only two days a week can still result in significant strength gains, and in some cases, training only one day a week has been shown to be effective.
When starting a resistance training program, it is important to consult with a doctor or other health professional. It is also important to rest each muscle group for at least 48 hours to maximize gains in strength and size.
Resistance training can be done using free weights, weight machines, resistance bands, or body weight. A typical resistance training session might involve a warm-up of light aerobic exercise, followed by dynamic stretching and then a set of exercises targeting specific muscle groups.
To build muscle strength, it is important to progressively increase the intensity of your training as your muscles adapt. This might mean increasing the weight, changing the duration of the contraction, or reducing rest time. It is also important to vary your workouts to challenge your muscles and help them adapt and strengthen.
In addition to resistance training, proper nutrition is key to maintaining muscle mass. This includes eating a high-protein diet, consuming enough calories to promote muscle gain, and eating the right amount of protein, carbs, and fresh fruits and vegetables.
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Avoid excessive cardio workouts
Excessive cardio workouts can lead to muscle loss, so it's important to find a balance between cardio and weight or resistance training. This is because, during a cutting phase, the body can start to break down muscle tissue to supply itself with the nutrients it needs to function.
If you're doing excessive amounts of low-intensity cardio (3+ days a week), you're probably neglecting strength-building exercises that preserve and promote muscle growth. High-impact cardio can also make it harder for your body to recover from your workout, leaving you less prepared for your next training session.
To avoid excessive cardio workouts, try to limit yourself to two to three cardio sessions per week, and ensure you're also incorporating strength training into your routine. For example, you could try a 10-minute treadmill workout, with a five-second all-out sprint every minute, followed by a recovery pace for the remainder of the minute.
If you're doing more intense cardio workouts, you can also try switching to low-impact exercises like cycling, swimming, or using a rowing machine or elliptical machine. These will still give you the cardiovascular benefits without as much negative impact on your body.
It's also important to ensure you're consuming enough calories and protein to promote muscle gain and recovery. Eating a high-protein diet can help you maintain muscle mass while losing weight.
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Incorporate low-impact cardio exercises
Incorporating low-impact cardio exercises is a great way to improve cardiovascular fitness without losing muscle. Low-impact exercises are gentler on the body and joints, reducing recovery time and the risk of injury.
When it comes to low-impact cardio, there are plenty of options to choose from. Walking is a simple and effective way to improve cardiovascular endurance. It can be easily incorporated into everyday life, such as by taking the stairs instead of the elevator or walking to work. Walking on a treadmill at an incline can also be a great low-impact cardio exercise.
Cycling is another excellent choice for low-impact cardio. It can be done outdoors or on a stationary exercise bike. Swimming is also a fantastic option, as it works the cardiovascular system without putting too much stress on the joints and muscles.
For those who enjoy running, it is important to incorporate rest and recovery time to ensure it remains low-impact. This can be achieved by varying the speed and intensity of runs and including interval training. For example, a good low-impact running routine might include a mix of sprinting, long-distance running, and interval workouts.
In addition to traditional cardio exercises, conditioning can also be a great way to improve cardiovascular fitness without losing muscle. Conditioning focuses on systematically priming, working, and pushing all energy systems, including the anaerobic alactic, anaerobic lactic, and aerobic systems. By improving efficiency across all energy systems, conditioning can enhance overall cardiovascular fitness.
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Maintain a calorie deficit while eating sufficient calories
To maintain muscle mass while doing cardio, it is essential to maintain a calorie deficit by consuming sufficient calories and the right kinds of food. This means eating enough calories to promote muscle gain while keeping fat at a minimum. A moderate calorie deficit of around 500 calories is recommended to spark fat loss without sacrificing muscle size or strength gains.
Eating a high-protein diet is crucial for maintaining muscle mass. Protein is essential for muscle repair and growth, and it boosts metabolism and keeps you full, preventing overeating. Aim for 0.8 to 1 gram of protein per pound of body weight. Branched-Chain Amino Acids (BCAAs) are also beneficial as they are stored in muscles and can be used for energy during exercise. Carbohydrates are also important, especially after a hypertrophy-driven workout, as they refuel your energy reserves and aid in recovery.
In addition to diet, proper recovery is vital. This includes rest and active recovery methods such as cold water immersion, light walks, or mobility-focused workouts. Recovery helps promote blood circulation and aids in muscle repair and growth.
To summarise, maintaining a calorie deficit while eating sufficient calories to support muscle growth is achievable through a balanced diet rich in protein and carbohydrates, along with proper recovery practices. This approach will help you achieve your fat loss goals while preserving or even building muscle mass.
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Frequently asked questions
To do cardio without losing muscle, you need to eat the right amount of food to maintain your muscle without gaining excess body fat, and train your muscles on a consistent basis using resistance training. You should also consider switching to low-impact cardio such as cycling, swimming, or walking, which will still give you the cardiovascular benefits without as much negative impact on your body.
Here are some tips for doing cardio without losing muscle:
- Do not do excessive amounts of low-intensity cardio (more than 3 days a week) as you will be neglecting conditioning activities that improve your energy system fitness.
- Do not do fasted cardio (running on an empty stomach) as once the fat runs out, your body taps its protein stores in the form of muscle mass, limiting the amount left to repair and build new muscle tissue.
- Do not do the same speed and intensity of cardio for 60 minutes as you want a variety of muscle fibres to be developed during your workouts.
- Do not do too much cardio before resistance training as it can have a negative impact on muscle strength.
- Do eat a high protein diet as your body needs protein to maintain muscle mass.
Some good cardio exercises that don't lose muscle are:
- Walking on a treadmill at an incline
- An easy bike ride
- A light jog
- A stationary bike
- Swimming
