1. To increase endurance.

2. To make you less susceptible to disease.

3. To strengthen your heart muscles.

4. To improve your complexion.

5. To reduce tension and enable you to handle stress better.

6. To help you lose weight and keep it off.

7. To help prevent constipation.

8. To lift your spirits.

9. To improve your sleep.

10. To clear your mind, step up the blood flow to your brain and make you more alert.

11. To prevent depression.

12. To elevate beta endorphin levels in blood.

13. To make your nervous system function better.

14. To increase self-esteem.

15. To ease the heart's workload by causing your muscles to use O2 more efficiently.

16. To relieve menopausal symptoms.

17. To relieve tension headaches.

18. To ease back problems by strengthening stomach and lower back muscles.

19. To reduce neck and shoulder pain.

20. To purify the blood.

21. To aid your digestive system.

22. To retard premature aging.

23. To increase flexibility.

24. To ease menstrual cramps.

25. To reduce varicose veins.

26. To relieve arthritis.

27. To reduce addictive cravings.

28. To decrease LDL cholesterol and increase HDL cholesterol.

29. To relieve hypertension.

30. To balance metabolism.

31. To help lose inches.

32. To improve your posture and general appearance.

33. To eliminate chronic fatigue.

34. To give you strength.

35. To reshape your body to fit more attractively into your clothes.

36. To improve circulation.

37. To stimulate the processes of absorption and elimination.

38. To make you more cheerful.

39. To cause your bone marrow to increase production of red and white blood cells and increase blood volume.

40. To help you regulate an out-of-control appetite.

41. (bonus reason) To create collateral circulation.