This type of exercise develops the fast-twitch muscle fibers that stimulate muscle growth. Like ballistic exercises, plyometrics require explosive movements. For example, plyometric push-ups require you to propel your hands off the floor, pushing your body into the air.Elevate IGF If you are going to train to be in a marathon or other event, don't try to increase muscles as well. Cardio is helpful to keep in shape, but a lot of it can slow down your efforts to improve muscle mass. If your focus is to build muscle, concentrate on strength-training.Elevate IGF Building muscle cannot happen if you're not getting a good amount of protein.

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