Which of these muscle fibre types provides the greatest speed and force of contraction

Fast-Twitch Muscle Fibers (Type IIb)

These fast-twitch fibers use anaerobic metabolism to create energy and are the "classic" fast-twitch muscle fibers that excel at producing quick, powerful bursts of speed.

Explanation:

teens need 8-10 hours of sleep. it kind of depends on what time you get up. but prob around 10 or 11 p.m. or 11 or 11: 30 p.m.

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fact: breastfeeding can transmit hiv. & unprotected sex transmits hiv.