Glossary beginning with F

Also known as "white" muscle fibre, which contracts two to three times faster than slow- twitch muscle fibre, producing 30-70 twitches per second. There are two basic types of fast-twitch fibre, type IIa and type IIb. The latter are the turbochargers in your muscular machinery, while both have the potential to become more powerful

connective tissue cells that can be transformed into the types of cells needed to repair body tissues

A chronic disorder characterised by widespread musculoskeletal pain, fatigue, and multiple tender points

The maximal volume of air that can be forcefully blown out after a maximal inspiration

A toxic chemical (CH2O) that harms cells and DNA when ingested or produced in the body

a highly unstable, short-lived molecule or molecule fragment that can cause extensive damage to cells