Is HIIT Good For Muscle Growth?

By Russ Howe

Most gym users who want to know how to build muscle can't seem to get any further forward due to the amount of conflicting information out there. One such area of confusion is HIIT.

Today we're going to be looking at this form of cardiovascular exercise and answering the all important question. Is it good for hypertrophy?

If most men were honest, they'd happily admit that they don't do enough cardiovascular exercise. It's often seen as the boring alternative to resistance training and they don't have the same level of drive for it.

Naturally, this behavior stems from a largely untrue stereotype that cardio is for women and weights are for men. This age old belief is something which has held countless gym members back for years and it's built upon lies.

Believe it or not, if your main target in the gym is to build more lean muscle then cardiovascular exercise will indeed play a huge role in your accomplishments. There are several effective forms of cardio which improve fitness and hypertrophy, most notably high intensity interval training.

There is a massive difference between the steady pace of regular cardio, often billed as boring, compared to that of a high intensity session. Despite being performed on the same equipment, it's a completely different style of workout.

High intensity interval training is based around constantly switching between moderate and high intensities, causing your body to tap into both it's aerobic and anaerobic energy systems. There are striking similarities between an interval training session and a resistance workout.

First of all, which energy system does your body use when you are training with weights? Your anaerobic energy system. During any high intensity interval workout you'll be tapping into the exact same energy resource.

Things get even better when you look at how your body burns calories during this type of training. During a normal session your body stops burning calories when you stop exercising. However, if you have performed an interval session your body will continue to burn calories at an increased rate for 16 hours afterwards! This is also known as 'the afterburn effect'.

As you can see, learning how to build muscle isn't necessarily all about hitting the weights. HIIT is a great way to increase lean tissue, with the added benefit of stripping away unwanted body fat at an increased rate.




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