New research now proves that the less you sleep, the more hungry you feel. According to Time, a new study published in the European Journal of Clinical Nutrition set out to put a number on those surplus calories consumed by the tired and weary. In all, the studies included 172 people ages 18 to 50, both male and female, who were either normal weight, overweight, or obese. The researchers found that the sleep deprived consumed an average of 385 calories extra per day, about the equivalent of four and a half slices of bread. They also found that sleep deprived people consumed more fat and less protein.