5. Check your progress

Assess your fitness six weeks after you start your program. Then do it again every few months. How are you doing? You may need to add more exercise time. Or you may find that you're exercising about the right amount to meet your fitness goals.

If you lose motivation, set new goals or try a new activity. Exercise with a friend or take a class at a fitness center.

Starting an exercise program is an important decision. But it doesn't have to be an overwhelming one. By planning carefully and pacing yourself, you can begin a healthy habit that lasts a lifetime.