Guy Fieri is facing weeks of immobility as he heads into recovery after a rare and frightening injury on the set of his upcoming series Flavor Town Food Fight left him needing emergency surgery. The ...

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, ...

Human movement is reciprocal in nature: Opposing muscle groups must coordinate for proper movement. Muscle length and strength between opposing muscle groups need to be in balance for normal movement ...