Sex Positions That Double as Exercise

Lunges

Sure, you might hate doing lunges at the gym while your personal trainer named Cheetah is yelling at you to do "just five more," but you might not mind them so much in the bedroom.

Like the name suggests, the lunge position has the woman sitting on top of the man, with one leg planted in front of her and the other leg extended behind her in between the man's legs. This move is good for the quad, front of the leg, hamstring, core, and butt, says Berman. "It'll also work the deep stabilizer muscle of the leg in the front -- both inner and outer thigh -- as well as stretch the back leg's hip flexor," she says. "That's great because most people sit at desk all day, and this way you can stretch it out."

Originally published on FitnessMagazine.com, February 2009.