1. in planning for an individual activity program, one should consider its __________ benefits in the body
2. ________ refers to the muscles and function of the heart.
3. warm up and stretching both play a big part in maintaining_________.
4. spending a few minutes of brisk walking warms your muscles so that they get the full benefits of _______.
5._________and__________should try maintaining body flexibility because as you age, your muscles,joints, and connective tissues lose the ability to move.