Most people who are going in for surgery in New York have no idea how much sleep their surgeon got the night before the procedure. Patients who find out that their surgeon was sleep-deprived may be more nervous about letting them perform the operation. However, researchers from the University of Toronto say that sleep deprivation may not actually affect surgeons’ ability to perform successful operations, and surgery-related problems occur at roughly the same rate whether or not a doctor has slept the night before.