How Much Do You Know About Fitness?

Besides the fact that doing regular exercise can improve the quality of your sex life, the National Institutes of Health calls exercise "the most effective anti-aging pill ever discovered." And did you know that exercise always lifts your mood by releasing feel-good endorphins, the body's natural painkillers?

Now that we've stoked your interest in feeling fit, take this quiz and learn the how-to's about warming up, working out, staying motivated, and cooling down with various types of exercise. The more you know, the more you'll glow with fitness.