I read somewhere that a 130 pound man will burn around 7 calories for every five minutos of sex, of really hard work sex. Of course everything it's relative.
whatever it is, it's not enough! . okay.. here's a calorie counter http://magazines.ivillage.com/goodhousekeeping/diet/calc/spc/0,,284562_295614,00.html
I heard about a study where couples where supposed to have sex every single day for like three months, and they were all thinner and in a lot better shape at the end.
I wish I could remember! For my birthday one of my friends got me a box of condoms and this little pamphlet. It had all the calorie loss counts for any sexual activity from innocent kissing to hardcore BDSM.
thank you lostNfound... it said 20 mins of sex burns 90 calories... wow! that's actually alot for just having sex.. I'm glad most of my sexual activity last more than 20 mins..