Astonishing aphrodisiacsYou’ve heard (and tried) it all before: down a dozen oysters, watch a marathon of sultry movies, get a couples massage. Even if these usual turn-ons work for you, sooner or later they start to feel tired—which may make you less likely to respond to them, says Irwin Goldstein, MD, director of sexual medicine at Alvarado Hospital in San Diego.Luckily, science has discovered a few more offbeat things that crank up your desire. Try one out tonight!Scare yourselfConsider taking a surfing lesson together instead of a romantic walk on the beach. After being in an adrenaline-pumping situation (say, watching a suspenseful flick or going zip-lining), men and women find the opposite sex more alluring, suggests a study in the Archives of Sexual Behavior.“When you’re doing something exciting, your heart is racing and your nervous system is activated, much like they would be if you were sexually aroused,” explains Cindy Meston, PhD, the study’s lead researcher and co-author of Why Women Have Sex. Just don’t use up all your energy riding the waves!