Why is body composition an important component of physical fitness?

If you are going to enter a wrestling competition and need to make a certain weight, which method would best utilize? a: pinch an inch b: circumference measurements c: bathroom scale d: body-fat scale

The amount of oxygen that is actually used by the body during the rest or a hand workout is determined by the heart rate, the stroke volume, and the amount of a. blood circulating in the vascular system b. oxygen removed from the vascular system c. oxygen provided to the vascular system d. blood that individual has in the body e. hemoglobin in the red blood cells

In which book word demography is used for first time