If you’ve ever burnt the candle at both ends only to find yourself gorging on junk food come breakfast time, there could be a biological reason for your binging. According to new research carried out at the Columbia University, when we are sleep deprived we eat more calories and reach for fatty foods to make us feel better. Researchers noted this tendency when tracking the sleep and eating habits of 13 men and women of normal weight. The participants slept for only four hours per night for six days and then nine hours a night for six days. When sleep deprived the adults consumed around 300 calories extra each day, with most of those calories coming directly from saturated fats. "If sustained, the dietary choices made by people undergoing short sleep could predispose them to obesity and increased risk of cardiovascular disease," said the research team.