Too Much Sleep <br />Could Be Bad for You The world's largest sleep study said that sleeping too much could be harmful for cognitive function. The study from the University of Ontario <br />even suggests that too much sleep is just <br />as bad as too little sleep. The study surveyed 40,000 participants from around <br />the world. It found that the ideal amount sleep needed is between seven and eight hours per night. Most people in the U.S. are getting <br />six hours of sleep per night. However, the researchers found that even one night of adequate sleep can improve cognition. Conor Wild, Lead study author, in press release
