The best way to strengthen is by doing Kegel exercises daily, says Hilda Hutcherson, M.D., author of Pleasure. Named in honor of the gynecologist who first popularized them, these are pelvic floor workouts that tone up the PC muscle encircling your vaginal opening.
"The PC muscle contracts involuntarily during arousal and orgasm. Learning to contract it voluntarily can be a great sexual enhancer," says Cathy Winks, co-author of The Good Vibrations Guide To Sex. Think more intense orgasms and the ability to "feel" your partner better. That, and he'll love the firmer grip!
"The easiest way to locate your PC muscle is to practice stopping the flow of urine -- the muscle you use to do this is your PC. Once you've found it, you can exercise your PC muscle in a variety of ways," adds Winks.
The Kegels drill is simple: Flex the PC muscle -- making sure to keep your abs, buttocks and thigh muscles relaxed as you do so -- and hold it for two seconds. Release. Flex again.
"Try to do two daily sessions of twenty-five to fifty repetitions each," says Hutcherson. You'll see a difference in a matter of weeks. Once your PCs are in fab shape, use them to your advantage during sex: