ÎçÒ¹¸£Àû1000¼¯ºÏDNA mutation lets some people live healthily on only 4 hours' sleep Studying a family that lives healthily on as little as 4.5 hours of sleep per night has led to the discovery of a gene that controls how much sleep we need News
DefinitionParkinson's disease Parkinson’s disease is a progressive neurological condition involving the death of brain cells