Dr. Oz says that sex, besides all of its obvious other advantages, can help men lose weight, too. But that's not because it burns so many calories—in fact, it burns just about 25, equal to less than a half of a slice of bread.

Instead, Dr. Oz says the real value of sex comes from the release of a hormone called oxytocin, which makes you feel community, love and empathy. "That is incredibly important because besides lowering your blood pressure, what it does is it tells your gut not to send signals to the brain to eat. So it's a wonderful tool to get you where you want to be," Dr. Oz says.