Orthopedic surgeons-in-training said they were tired less often after rules regulating how much they could work went into place, according to a U.S. survey. Debra Weinstein, HMS assistant professor of medicine at Massachusetts General Hospital, was one of the researchers. But the results published in the Annals of Surgery found the trainee doctors didn’t actually get any more sleep under the limited work hours policy, and also said they felt less prepared as doctors and were less satisfied with their education.