11 febrero 2015
An expert panel that examined data from 320 studies is recommending new guidelines on how much sleep people should get. The guidelines are based on age, ranging from newborns (who need 14 to 17 hours of sleep per day) to adults aged 65 and up (7 to 8 hours per day).
http://feeds.sciencedaily.com/~r/sciencedaily/~3/69juQP8o9o4/150211132111.htm
