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

While running economy might not be a metric on your smartwatch, you can still take steps to improve it and run better.

Another thing that can influence how well you put on muscle are your fast-twitch and slow-twitch muscle fibers. Skeletal muscles are composed of both of these fibers, which serve different ...

A new international study led by the University of Granada suggests that melatonin, a hormone known for regulating sleep, may also help protect muscles from damage caused by obesity and type 2 ...