Good news! Sleeping a few extra hours on Saturday and Sunday is not slothful. It’s healthy. Getting too little sleep, which is epidemic in our 24/7 society, is a major contributor to type 2 diabetes. But researchers from the University of Chicago have determined that two consecutive nights of extended sleep, which is a typical weekend occurrence, appears to counteract that increased risk of type 2 diabetes associated with short-term sleep restriction during the work week.