One of the most disconcerting things to see as you are wheeled into surgery is your surgeon yawning. The worry is not that the surgeon will fall asleep during the procedure; it is that the surgeon is not at his or her best. We assume that a sleepy surgeon is more likely to make a mistake, like wrong-site surgery or nicking an artery, but, according to a study in the American Journal of Surgery, that is not actually the case.
The study involved training medical students on specific tasks. Half of the group then got a full night's sleep, while the other half got just two hours of sleep. When they repeated the tasks, the results were the same: The sleep-deprived students performed the tasks as well as they had the day before. They also were able to learn a new task just as well as they had when fully rested.







