Need !
if your goal is to swim across a major river, it is important to have pools and other bodies of water in which to practice.
a. true
b. false

If you were running a marathon, which type of muscle fibers would be most useful to you? a. slow-twitch b. fast-twitch, type i a c. intermediate-twitch, type ii b d. slow-intermediate twitch, type i b select the best answer from the choices provided. a b c d