10 Surprising Health Benefits of SEX:

1. Relieves Stress
2. Boosts Immunity
3. Burns Calories
4. Improves Cardiovascular Health
5. Boosts Self-Esteem
6. Improves Intimacy
7. Reduces Pain
8. Reduces Prostate Cancer Risk
9. Strengtens Pelvic Floor Muscles
10. Helps you Sleep Better

take note that sex is good for you in ways you may never have imagined and that the health benefits extend well beyond the bedroom.
http://www.medicinenet.com/sexual_he...ow/article.htm

hmm, judging by this information if you are overweight you either not getting enough or your not doing it properly.
so, ladies and gentlemen ,...have a quick knuckle shuffle,..lose the stress , lose a few calories as the bonus
and dont forget to practice ''safe sex'' ie, dont do it on a railway and dont stand too close to the edge of a cliff.