The ultimate gateway drug: Bacon

Because bacon is one- to two-thirds fat and also has lots of protein, it speaks to our evolutionary quest for calories, Lundstrom says. And since 90 percent of what we taste is really odor, bacon’s aggressive smell delivers a powerful hit to our sense of how good it will taste.

“There’s an intimate connection between odor and emotion, and odor and memory,” Lundstrom says. “When you pair that with the social atmosphere of weekend breakfast and hunger, bacon is in the perfect position to take advantage of how the brain is wired.”