Repeated exercise, or wasting, can change the way key genes work.

Some of the best muscle-building foods include protein-rich chicken, salmon, and lentils. You can pair dietary changes with ...

As you bite into a crisp apple, your jaw muscle contracts, allowing you to grind the fruit between your teeth. When you climb a flight of stairs, your gluteus maximus (or "glutes") push your body ...

Creatine is a substance naturally produced in the human body. Most creatine goes to your skeletal muscles, where it is then blended with phosphoric acid to produce phosphocreatine. Phosphocreatine ...

Creatine, a supplement often used by athletes and bodybuilders, could also make treatments for depression more effective ...

A new study finds that even after weight returns in anorexia nervosa, muscle strength may remain impaired, with implications for recovery.