Which one of the following activities provides a total body workout using most major muscle groups?
a. rollerblading
b. rowing machine
c. stationary bicycle
d. treadmill

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