Chapter 13 Lifelong Fitness

4. A fitness plan that depends on four factors of exercise: frequency, intensity, time, and type.
7. Exercising too intensely or for too long without allowing enough time for rest.
8. activity Any movement that requires large muscle groups to work.
9. The heart rate at which your cardiovascular system receives the most benefits from exercise without working too hard.
10. Chemicals that block pain messages from reaching brain cells and produce feelings of pleasure.
12. Exercise that involves contracting and relaxing muscles through the full range of their joint’s motion.
13. An ongoing physical activity that raises your breathing and heart rates.
14. Having the energy and strength to participate in a variety of activities.

1. A serious reduction in the body’s water content.
2. Exercise in which muscles contract but very little body movement occurs.
3. The ability to stay healthy and fit as you age.
5. Participating in a wide variety of activities.
6. A measure of how much body fat a person has, as compared to muscle and bone.
10. performed with machines that ensure muscles contract at a constant rate.
11. Intense physical activity that lasts for a few seconds to a few minutes.