When it comes to your body, knowledge is power. Literally. The better you understand your muscles and what they're capable of, the more you can do with them, whether you're acing a serve or turning ...

It's the ultimate longevity workout. If you’ve ever climbed stairs, carried a heavy object, hiked up a mountain, played tug ...

Building muscles: Muscle stem cells (their nuclei marked in blue) gradually alter their structure and function, becoming adult muscle cells (whose nuclei turn red). Those cells will eventually fuse ...

MIT researchers have developed a way to help people with amputation or paralysis regain limb control. Instead of using electricity to stimulate muscles, they used light. Here, Guillermo Herrera-Arcos ...

Hypertrophy and strength training are both types of resistance training. Focusing on one area doesn’t mean you won’t see gains in the other, but varying your workouts can optimize your results.