Not every rep builds muscle equally. Here's the science behind muscle fiber recruitment and why your last few reps matter most.

Researchers have just made the unexpected discovery of a novel organization of muscle fibers in Parophidion vassali, a fish that lives in the Mediterranean Sea and, like many fish, uses specialized ...

Muscles make up nearly 40% of the human body and power every move we make, from a child's first steps to recovery after injury. For some, however, muscle development goes awry, leading to weakness, ...

A rare congenital muscle disease that robs patients of strength from childhood has long lacked meaningful treatment options, ...

The flow of water within a muscle fiber may dictate how quickly muscle can contract, according to a University of Michigan study. Nearly all animals use muscle to move, and it's been known for a long ...

Weight lifting is only part of the equation.

The millions of microbes living in your gut have far-reaching effects on health. New Africa/ Shutterstock A recent study suggests that these microbes may also influence an important aspect of fitness ...

The flow of water within a muscle fiber may dictate how quickly muscle can contract, according to a new study. The flow of water within a muscle fiber may dictate how quickly muscle can contract, ...