From rhinoceros horns to Spanish Fly, even oysters and chocolate-covered strawberries, mankind has relied on natural foods and herbs to boost his libido. But do they work?

According to an FDA report published in 2006, probably not.

But you don’t have to believe the FDA. Even renowned sex expert Dr. Ruth Westheimer has been quoted as saying, “There’s no such thing as a true aphrodisiac.”

It’s more likely that an aphrodisiac’s power lies in a person’s belief that it works… the old placebo effect. The mind is our most powerful sex organ, so if we believe a food will make us sexy, sensual and desirable, it will.

A food’s desire-boosting abilities may also have more to do with the environment in which it is eaten than the food itself. Sucking down oysters during a candlelight dinner, soft music playing, champagne sparkling in fine crystal flutes… Who wouldn’t begin to feel amorous?

The placebo effect is definitely powerful. That’s why certain foods, due to their nutritional value, the physiological effects they have on your body, and centuries of folklore, are considered highly effective aphrodisiacs.

Amy Reiley, author of Fork Me, Spoon Me: The Sensual Cookbook likes ginger, because it makes your tongue tingle and swells your lips, turning them red and kissable, and also raises your body temperature slightly.

You won’t get these effects from a can of Canada Dry, though. Try some fresh ginger in a crisp veggie stir fry or make your own homemade ginger ale to really experience the powerful herb.

Discovery Health recommends asparagus, chili peppers and chocolate for their stimulating powers. Asparagus is rich in Vitamin E, thought to stimulate production of sex hormones. Chili peppers release capsaicin, a chemical that stimulates our nerve endings and also releases endorphins. And dark chocolate—in addition to its creamy, sweet taste and sensual texture—contains phenylethylamine, which gives us a natural high. Recent studies show that dark chocolate not only makes us feel good, it’s good for the heart, too.

Even if the aphrodisiac effect in these foods is purely psychological, nutritionists and sex experts agree that healthy foods are more likely to have long-term positive effects on your sex drive by giving you more energy and helping you look and feel better.

But there’s one aphrodisiac that won’t even count toward your daily caloric intake: regular exercise. The release of testosterone during workouts, along with feel-good endorphins and adrenaline, has been shown to boost the sex drives of both men and women.

A friend of mine says he’s started having sex three times a day since he began working out. I know an hour of bicycle-riding on the weekend always puts me in the mood. Besides, regular exercise will help you look better, feel better about yourself, and give you more energy. What’s not to love about that?