Muscle fibers

Muscle fibers are the cells that make up our muscles, allowing them to contract and produce movement. There are three main types: slow-twitch fibers, which are endurance-oriented and help with activities like long-distance running; fast-twitch fibers, which are suited for sprinting and quick, powerful movements; and intermediate fibers, which share characteristics of both. Each type plays a unique role in fitness and performance, influencing how our bodies respond to different physical activities. Overall, the composition of muscle fibers affects strength, speed, and endurance in physical tasks.