If you're looking to spice up your time in the bedroom have your male partner eat some walnuts, hazelnuts, and almonds each day. Spanish researchers have found men who ate two large handfuls of nuts a day (about a half cup total) reported having a better sex life. It's thought the nutrients in the nuts help transmit signals to the penis that boost sensitivity and performance, and that the antioxidants in the nuts benefit the cardiovascular system-- which has been linked to increased libido. They scientists say that more research would be needed on the topic to pin down the definite reasons why eating nuts can be beneficial for men.