Think of what exercising with a partner can do for a relationship, whether it's with a spouse, a sibling, or a friend you used to go to lunch with once a week. So plan to walk with your spouse after dinner every night. Meet your sister or that friend for tennis or an aerobics class instead of lunch.

Exercise Helps prevent Disease

Research has shown that exercise can slow or help prevent heart disease, stroke, high blood pressure, high cholesterol, type 2 diabetes, arthritis, osteoporosis (bone loss), loss of muscle mass and it can also help ease some aspects of the aging process.

Exercise Lets You Eat More

Pound for pound, muscle burns more calories at rest than body fat. So the more muscle you have, the higher your resting metabolic rate. And, of course, you also burn calories while you're actually exercising. All this means that "cheating" with a cookie once in a while isn't going to take you back 10 steps. "Can you eat anything? No."