Study Guide 5 components of fitness Flexibility Muscular Strength Muscular Endurance Cardiorespiratory Endurance Body Composition Flexibility- The range of motion in a joint. Muscular Strength- How much force a muscle can handle Muscular Endurance- How long a muscle can work Cardiorespiratory Endurance- The ability of the heart and lungs to provide oxygen for an extended amount of time Body Composition- The ratio of fat mass to fat free mass in the body *key notes- Fat plays an important role in the body. Without some fat we would lack insulation and padding. Fat also helps with nerve impulses.