Your heart functions in your body as a(n)
a. organ for absorbing vitamins and minerals.
b. series of joints responsible for endurance.
c. filter for impurities.
d. muscle that to pump oxygen around the body.

What are the components of an effective weight-training program? a. conditioning, progression, generalization, overwork, balance, and recovery b. overload, progression, specificity, regularity, recovery, balance, and variety c. overwork, coordination, motivation, conditioning, regularity, and variety d. consistency, progression, rest, regression, balance, and specificity