Is cardio good or bad while bulking?

Author: Prof. Leila Cronin  |  Last update: Wednesday, September 17, 2025

In fact, doing cardio while bulking offers several benefits. Specifically, it helps improve your weightlifting performance, boosts between-set recovery, may make it easier to lose fat again once you begin cutting, and keeps you in good mental and physical health.

Should I do cardio during a bulk?

  • Yes, you should.
  • A moderate amount of cardio exercise will help you stay lean while you bulk, and it's good for your health.
  • Almost everyone should be doing some type of cardio during the bulking phase.
  • Last, you probably do more in your daily life than just lifting weights.

Is cardio bad for muscle growth?

While cardio is great for improving cardiovascular health and burning calories, doing it every day can interfere with muscle building. Cardio exercises, such as running or cycling, can burn calories and break down muscle tissue, which is not ideal if you are trying to build muscle.

Is it okay to run while bulking?

Yes, you can do cardio while bulking. Incorporating cardio can help maintain cardiovascular health, improve recovery, and enhance overall fitness without significantly hindering muscle gain. Recommendations for Cardio While Bulking: Frequency: Aim for 2-4 times a week.

Can I lose fat while bulking?

If you can sustain a lifting program and maintain a calorie deficit, your body will be able to pull from its fat stores to both fuel itself and potentially build muscle mass. Prioritizing foods rich in protein is a key component to both losing body fat and building muscle at the same time.

How To Bulk Like A Pro (Using Science)

Can I run and still build muscle?

Running is good for building muscle but only if you give your body the right fuel. Without adequate nutrients, particularly protein, your body will not be able to support the muscle-building process and all of your hard work will be wasted.

How much cardio kills gains?

In fact, newer studies have shown quite the opposite could be true: cardio doesn't inhibit muscle gain and may even help it. “In recent years, the body of research evidence indicates that doing concurrent training does not interfere with hypertrophy following resistance training,” Rosenkranz says.

Can too much cardio cause belly fat?

Although exercise is extremely healthy, too much can actually be a stress on the body. Overtraining happens when you go too hard, too often, or don't take time to recover. This can increase inflammation as well as the stress hormone cortisol. Cortisol can lead to fatigue and weight gain, especially around your belly.

How to bulk up for skinny guys?

Consume 0.8-1g per pound (1.6-2.2g per kg) of body weight in protein every day. Consume the rest of your calories from foods composed of carbs and fats. Eat vegetables to keep up your fiber and micronutrient content for your general health. If you are not gaining weight, add more carbs and/or fats to your meal.

Should I skip cardio to build muscle?

Cardio exercise can potentially hinder muscle strength and size gains if it's overdone or not properly balanced with strength training. This is because excessive cardio can lead to a state of catabolism, where muscle tissue is broken down for energy, especially if the body is in a caloric deficit.

Can you do a lean bulk?

Eat at a caloric surplus but avoid excess fat

When your caloric surplus is too large and contains too many carbohydrates and fats, you'll put on body fat. To maintain a lean bulk, you'll need to eat at a calorie surplus that consists of extra protein and wholegrains, without containing too much fat.

How much cardio is too much?

There's no exact answer for how much cardio is too much. But if you're not a distance runner, anything over 60-70 minutes per day is likely counterproductive—especially if you aren't consuming enough protein or calories to support the daily caloric expenditure.

What is dirty bulking?

There are other terms for this, such as build mode, but bulking is a common term for this caloric surplus. Dirty bulking is when an individual is in a caloric surplus to build muscle (build mode). However, the individual is eating foods that are carb dense, unhealthy, and ultra-processed out of convenience.

Is 2 month bulk enough?

Generally it doesn't matter a whole lot the frequency you choose what's important is to keep going until you achieve the desired results. However, for most I recommend bulking for 2-3 months, then cut down for however long you need to get rid of the unwanted amount of fat. Everyone will need a different amount of time.

Why am I gaining weight from cardio?

Post-workout inflammation

Those tiny tears in your muscles can also cause temporary post-workout inflammation. “This is expected and perfectly healthy,” Mohr said. You may retain fluid after exercise as your body repairs the damage, which can cause water weight gain.

Is cardio actually bad for fat loss?

Relying on cardio to burn calories is the biggest mistake people make when trying to lose fat, trainer Ben Carpenter told Insider. It can ramp up your appetite, which can lead to more eating, he said. Cardio is important for health, but eating in a calorie deficit is most important for fat loss.

Is cardio bad for bulking?

Despite all of this, it is true that excess cardio will inhibit growth. This is because the excess of exercise will burn the calorie surplus you're eating, undoing the hard work. However, to get the benefits of cardio, you'll need to keep your activity levels up with low and moderate intensity exercise.

Is cardio 7 days a week too much?

If you're trying to lose weight, you should aim for doing cardio at least five days per week for a total of at least 250 minutes (4 hours, 10 minutes) each week. Contrary to what many believe, you can do aerobic exercise seven days per week. If this goal seems daunting for you, start slow.

Does cardio give you abs?

While doing cardio exercises that focus on the abdominal core will help build and strengthen your muscle, you need to follow a good nutrition plan for them to be visible. For most, this will mean eating at a caloric deficit and consuming enough protein to get those strong, visible abs.

What physique does running give you?

You will have stronger legs from running

When we run, we use all the muscles in our legs, big and small. If you are new to running, you might be surprised by how quickly you start to develop lean muscle in your legs and the speed at which you build endurance.

What is hypertrophy?

WHAT IS HYPERTROPHY? Muscle hypertrophy (known simply as hypertrophy) is an increase in the size of a muscle, or its cross- sectional area attributed to an increase in the size and/ or number of myofibrils (actin and myosin) within a given muscle fiber.

How can I bulk up and still run?

Follow these running tips to strengthen your legs and build muscle
  1. Change the intensity of your runs. Incorporate interval training as a part of your routine by adding planned sprint bursts to the mix. ...
  2. Run at an incline. ...
  3. Incorporate weight lifting or resistance bands. ...
  4. Be sure to rest. ...
  5. Get enough protein in your diet.

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