1. Shag your guy's ticker into shape. According to a study at Queens University in Belfast, men who have sex three or more times a week can cut their risk of heart attack in half.
2. According to that same study, regular romps will also halve your man's chances of suffering a stroke.
3. Work off that Rice Krispies Treat without hitting the treadmill. One 30-minute roll in the hay burns about 200 calories.
4. Avoid going postal at work. Nooky helps the brain produce neurotransmitters, chemical messengers that help mellow our moods.
5. Get more z's. A little sensual massage followed by some dancing in the sheets releases sleep-inducing endorphins.
6. Wake up and smell the roses. Post-romp, you'll experience a surge in the hormone prolactin, which develops new neurons in the brain's olfactory bulb, improving your sense of smell.
7. Unless you're a kinky, wayward politician, it's free!
8. Kick colds to the curb, that having sex once or twice a week boosts the immune system by 30 percent.
9. Protect your pearly whites by stepping up to the mic. Semen contains zinc, calcium, and other minerals proven to fight tooth decay. (Only trace amounts, but who's counting?)
10. Watch a Lost DVD marathon without constant bathroom breaks. Sex tones the pelvic muscles that support your uterus, bladder, and bowel, meaning better pee control.
11. No pain, all gain. Right after your big O, you'll be practically swimming in oxytocin (we're talking a seriously intense surge). The overload releases endorphins, which help alleviate pain from arthritis...
12. ...and--hallelujah!--menstrual cramps.
13. Take him to your level. How a Man's Mind Really Works, the one time a man's oxytocin level can match ours is after his happy ending.
14. Put more pep in your step, that women absorb some of the testosterone men secrete in their ejaculate. The payoff: "The increased testosterone can have energy-boosting effects in women."
15. Blow him away in your bikini. According to researchers, regular shagging can tighten your tummy...
16. ...and firm your bum.
17. Aunt Flow, we meet again, women who have sex at least once a week have more-regular menstrual cycles than those who do it once in a blue moon.
18. Curb irritability. "Tactile stimulation soothes nerves!
19. Prove that yes, good girls do do that.
20. Forget flowers and the flat-screen: Sex is an easier (and cheaper) way to make up after a fight.
21. Explore your limits. "There's a thin line between pain and pleasure. Sex can help distinguish between the sensations"
22. Stir creative juices. "When people are together long-term, sex can become boring, "Coming up with new ways to keep things interesting improves the imagination."
23. Two words: "I'm preggers!"
24. Sex can trigger the onset of labor when you're at term. "Semen contains prostaglandins," When they're against the cervix, prostaglandins help it dilate and induce natural labor."
25. Getting busy on the regular can improve your flexibility.
26. Use it or lose it. The more you have sex, the more likely you'll be to continue to produce testosterone, one of the primary hormones responsible for sexual desire.
27. Love the skin you're in. For some people, gettin' busy can boost body image, Resh says.
28. Keep closer tabs on your health. Sex means exploring your body--and your honey's--so you'll notice if things feel or look wonky and might need a doctor's attention.
29. Seriously pissed? Instead of screaming your head off, save your voice and have sex. It's a great way to release tension.
30. Improve your communication skills. Speaking up about what's working (or not) in the sack can help you express yourself in other parts of your life.
31. I Cross language barriers. He speaks Italian. You're from Texas. But in the boudoir, you both speak the universal language of l-o-v-e (nothing gets lost in translation).
32. Give him a booty biscuit. "Guys see sex as a sign of approval from their partner," Jake Davis says.
33. Add your share of smut to the girls' night cocktail chatter. Even bad sex is fun to dish about.
34. Express some of your more risqué emotions and behaviors--aggression, domination--in the comfort of your own bed. (Can you say S&M?)
35. Yes, tonight, honey--I have a headache. Recent studies have shown that doing the horizontal hustle can bring temporary headache relief.
36. Feel the power. "When things go well in the bed and you're pleasing your partner, you feel more confident and powerful in other parts of your life."
37. Give your guy a helping hand. According to the Journal of the American Medical Association, the more he ejaculates, the less likely he is to develop prostate cancer.
38. Activate your taste buds. "Your sensitivities are heightened after sexual intercourse. "That bottle of wine or chocolate bar will taste even better."
39. Strengthen your core--it's like Pilates without the annoyingly perfect instructor.
40. Having sex eases the tension around sex itself. (Circular logic, but it's true!)
41. Best excuse in the world for pricey, pretty, frilly, silky lingerie.
42. How else will you get better at it?
43. "Increase the amount and quality of cuddle time. The best comes immediately after the orgasm.
44. "Good sex creates more love each time.That's why it's called 'making love.'"
45. Share a laugh about your O-face...or not.
46. Vitalize the vag. Increases in blood flow to the pelvis keep the oven in good order47. It's the perfect excuse to crank some Prince...
48. ...then follow that up with some Marvin Gaye.
49. Because it's 3 a.m. at 30,000 feet, and your red-eye doesn't land for another two hours.
50. You can make like a leading lady and reenact steamy sex scenes from your fave flicks. Start with 9 1/2 Weeks.
51. Sex makes you happier than having money does, according to a recent study by the National Bureau of Economic Research. A marriage that included regular humping was figured to bring the same levels of happiness as earning an extra 0,000 annually.
52. Be at one with nature. After all, birds do it. Bees do it. Even educated fleas do it.
53. Because the clitoris is the only organ whose sole function is pleasure...
54. ...and it would be a shame to let that go to waste.
55. I Skip the Botox. In his book, Secrets of the Superyoung, neurophysiologist Sandra John, M.D., of Jake Long Hospital, writes: "An active sex life slows the aging process."
56. Come on, do you really need a reason?