We’ll try pretty much anything in our quest for a decent night’s sleep. Melatonin supplements? Been there, done that. Gravity blanket? Promising, but too hot for our liking. We even resorted to adult bedtime stories (surprisingly effective, actually). And while we all know to limit caffeine and heavy meals before bed, registered dietician Karman Meyer recently revealed a few more surprising ingredients to avoid in her new book, Eat to Sleep. Here, five foods that could cause major sleep disturbances.