Scientists say night owls still more tired than early birds because genetics

Sleep scientists from the US say that night owls who get more sleep than their early riser peers still suffer more from daytime sleepiness because they are genetically wired to sleep at different times

from Femail | Mail Online http://www.dailymail.co.uk/femail/article-3921702/Scientists-say-night-owls-tired-early-birds-genetics.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490