Medically reviewed by Mallory Christopherson DC, FMT, CSCS Bodies are all unique and come in many shapes and sizes. To help ...

Arnold Schwarzenegger does a 360-rep finisher and calisthenics warriors go until they drop—but how many reps are actually ...

If you didn’t already know you have different types of muscle fibers in your body, now you do. And depending on how you exercise or what sports you enjoy, you’re building and recruiting some ...

On the other hand, slow-twitch muscle fibers are smaller and intended to help you sustain long periods of cardio such as long distance running, swimming, cycling and any type of endurance training.

Isotonic contractions – these occur when a muscle contracts and changes length and there are two types: Isotonic concentric contraction – this involves the muscle shortening. The origin and ...