While you may be at your absolute best sleeping seven hours a night, someone ... have a basal sleep need of seven to eight hours every night, but where things get .... Ellen's sleeping habits have undergone many changes throughout her life.
In addition to age, other factors can affect how many hours of sleep you need. ... mental tasks as do people who get closer to seven hours of sleep a night.
6 Jun 2008 ... Sleep expert Daniel Kripke reviews the research and says 8 hours is not ... we need it, why it can be hard to get, and how that affects everything from our ... To many, his results were surprising, but they've since been ... A: Studies show that people who sleep between 6.5 hr. and 7.5 hr. a night, as they report, ...