Rapidly twitch fibers agreement speedily but get exhausted speedily. They use lots of Vitality and they are valuable for sprints. They may be whitish, as they don't demand blood to function. [136] Using this kind of substances in track and field is opposed on both equally ethical and healthcare grounds. https://finnwz.suomiblog.com/the-ultimate-guide-to-sports-track-and-field-43319219