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

- Muscle cells, also known as myocytes, are specialized cells designed for contraction and force production. Skeletal Muscle Cells: These cells are long, cylindrical, and have a striated (or striped) ...

Building your fast-twitch muscle fibers can help you get stronger and faster. This type of muscle fiber is responsible for the fast, explosive movements used in activities like sprinting, jumping, and ...

slow-twitch muscle fibers, which move more slowly but help to keep you moving longer fast-twitch muscle fibers, which help you move faster, but for shorter periods “Twitch” refers to the contraction, ...

When you picture different athletes—marathon runners, gymnasts, and Olympic weightlifters, for example—you likely categorize them instinctively by their height, size, and build. But the differences in ...

Preserving lean mass is the secret to staying mobile and independent as you age; these expert-recommended proteins are your ...

Would you wear clothing or, say, shoelaces or a belt made of muscle fibers? What if those fibers could endure more energy before breaking than cotton, silk, nylon, or even Kevlar, and be produced ...