We all know someone who loves their spicy food. Well, as it turns out, there is some science behind the love of hot flavors. Capsaicin, the chemical that produces the heat in chiles and peppers, increases the release of feel-good endorphins when the spice hits the tongue, according to Dr. Paul Rozin, Department of Psychology at the University of Pennsylvania. Endorphins are known for their ability to reduce stress, relieve depression, and significantly raise the spirits. So, if you need an emotional lift, add some hot sauce or cayenne pepper to your next meal.