Research shows that protein in the morning makes it difficult for sugar cravings to take hold later on. Lean protein options like eggs, yogurt, peanut butter, and low-fat cheese produce less of the hunger-stimulating hormone ghrelin and more PPY, a hormone that signals fullness. MRI scans of high-protein breakfast eaters in a University of Missouri study showed reduced activity in areas of the brain associated with cravings. Can’t stomach food too early in the morning? No problem. Eat it by 10 AM and you’ll still help quell that late-day sugar rush.