Exercising the muscles changes the ratio of and speeds up weight loss.
a. fat to muscle fiber
b. protein to muscle fibers
c. blood to muscle groups
d. oxygen to muscle groups

Aproper cool-down routine includes which of the following? a). eating a good-sized meal b. five to 10 minutes of slow walking or jogging and stretching c). less than 5 minutes of cool-down stretches d). sprinting or other strenuous exercise