We know we eat more when we don’t get enough sleep, and a new study finally pinned down how much extra food we chow down on during those days when we struggle to keep our eyes open. Participants who slept fewer than five-and-a-half hours ate an average of 385 more calories than people who got enough shut-eye.

To make matters worse, if you’re exhausted, you’re more likely to skip protein and eat foods high in fat. Need a better idea of what much 385 calories looks like? Here are some examples:

Eating a couple extra slices of pizza or an order of fries once in a while isn’t a problem. But if you’re chronically sleep deprived, the extra calories add up and become a seriously unhealthy habit.