Hot spices such as cayenne 5

Brigham Young used to make suggestions as to how to avoid masturbation, which included avoiding spicy foods, leaving the shower door open just a bit to lessen the density of the steam, and if necessary, tying your right wrist to the bed post (which potentially seems like it might turn some people on!). So maybe this is another reason that salsa has replaced ketchup as America's number one condiment.