WHAT'S IN Directions: Read the statements on the different physical fitness components. Mark ( / ) on the statements that are correct and mark ( x ) if not. 1. BMI (Body Mass Index) refers to the proportion of lean body mass to fat body. 2. Agility refers to a quick shift or change of direction from one point to another. 3. The ability of the muscles and joints to go through a full range of motion is called flexibility. 4. Balance means to stay in equilibrium in relation to changes in body position. 5. Muscular endurance is defined as the maximum pull or push that can be exerted one time by a muscle group.