Building a body for amazing sex has little to do with how much weight you can lift or curl. It actually depends on how well your body can push and thrust, explains Dr. Lynn Anderson, author of the book Sex Matters So...Get Sexually Healthy the Natural Way. While it doesn't take much to tap into these ‘sex muscles’ (like your abs, back and pelvis), you do need to train them for strength, stamina, and flexibility, she says. To boost your experience in the boudoir, we asked experts to supply us with 10 simple, sex-enhancing exercises. For best bedroom results, do these moves in a circuit (consecutively doing one after another without rest) working up to three sets in a row, three days a week.