The bedroom. Two words: satin sheets. "Not only do they feel sexy against the skin, but they encourage much more active sex because you can really move easily. You can change positions, slide around, or flip your partner over with very little effort," says Michael Perry, Ph.D., a sex therapist in Encino, California. Try starting on top on her side of the bed, then roll to your side after 2 or 3 minutes and let her take the top. Then repeat several times. Then repeat several times again. And again. Watch the lamp.