If you want to start exercising for fun, fitness, weight loss, or for any other reason, you are to be commended. But be warned:
Exercise may become addictive. Participation in exercise may cause feelings of improved self-confidence, an increased sense of personal accomplishment, and overall good health. Prolonged exposure to exercise may even cause endorphin highs to course through your veins and make you feel generally better about your life.
Still, I hope you'll give it a try!