Should you sprinkle a little cayenne to finish off your pasta dish? If it's for your date, then you'd best spike that shit. Capsaicin heats up your body and pumps blood. Most importantly, it releases endorphins, those wonderful little chemicals that also come out during a good workout (so many puns, so little time). This, when coupled with the effects of the ingester's appearance, like flushed skin and swollen lips, make peppers a go-to across cultures and history for looking like you're having sex. Which can be the first step to actually making the sex. You have to look the part, right?