Biohybrid robots that run on real muscle are shifting from science fiction toward workable machines. In labs around the world ...

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 ...

Forget about feeling lost among all that iron and pulleys. I've prepared a friendly guide to help you identify your "super machines" at the gym, the ones that will help you sculpt the body you want ...

Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.