Muscle Fibers

Our body's muscles are made up of fibers called Myocytes witch are strands of proteins that can grab onto each other and pull.
Our muscles fibers can be broken down into 2 main types.

Slow twitch muscle fibers.
Fast twitch muscle fibers.


These 2 muscle fibers influence how our muscles respond to training and physical activities, and each contracts in a different way. on average we have about 50 percent slow twitch muscle fibers and 50 percent fast twitch muscle fibers in our body.

Slow twitch-Slow twitch muscles are more efficient at using oxygen to generate more fuel. They fire more slowly than fast twitch muscles witch means that they will fatigue slower. Slow twitch muscles are great for athletes who run marathons or ride long distances.

Fast twitch-Fast twitch muscles are better for generating short burst of energy for sprints or heavy weight lifting. however they fatigue a lot faster than slow twitch muscles. Fast twitch muscles produce the same amount of force as slow twitch muscles but fire a lot more rapidly.
Fast twitch muscles are perfect for a sprinter who needs to generate as much power and force in an instant to produce speed.