Life should not be a journey to the grave with the intention of arriving in your coffin safely in an attractive and well-preserved body, but rather to skid in sideways, quarter pounder in one hand, martini in the other, body thoroughly used up, completely worn out, and screaming 'Whoo hoo, what a ride!"

That being said, I'll back up Tourguide on this one; pregnancy does more damage to one's body than BDSM play does. Take it from someone who had two big boys 11 months apart (my oldest was 7-10, my second was 8-4, which is big for a four foot eleven and three quarters Asian girl weighing 97 pounds.) my tits hang halfway to my belly now (I pumped rather than breastfeed) my belly looks like I still have another one in there (belly pudge never went away completely; probably never will) my waist went from 23 to 34 inches, and my thighs and but look like I shoved a cinnamon bun and eclairs in them. And I'm only 25!

And i recently gave up the effort of trying to take time out from my day to go jogging to lose the belly pudge and the hip pudge and the thigh pudge and the bun pudge. I'm happy, I'm comfortable, I don't have any heath problems associated with the weight gain and extra body mass, so why worry about it? If it feels good, go right ahead and do it. Life is too short to worry about what will and won't damage your body. As long as you're not suffering health complications or what you're doing is going to seriously damage you to the point where life becomes impossible or difficult (and your Dom should be making sure tht won't happen), then just do it! Don't spend life analyzing everything, or you'll analyze yourself right out of some of the best experiences life has to offer.