Diet and Exercise > Excercise
Everybody knows that exercise is good for you. It reduces your risk of heart attack by 25% or more. It improves your circulation. It helps prevent softening of your bones (osteoporosis). And it makes you feel good and look better.
The good news is that even mild, regular exercise like walking, housework, or yard work helps, even if you only do 20 minutes a day, three times a week. More exercise gives more benefits. For most people 20 to 45 minutes of moderate exertion, 7 days a week, is ideal.