Busy busy me. There is still school tomorrow, despite many are having holidays. Can't help it, 'O's are coming.
Saw this on Wiki.
"Wiki: An American study linked life spans with sleep amount and found that those who sleep 4 to 7 hours live longer lives, with those sleeping less than 4 or more than 9 hours having about a 30% increased chance of early death, similar to moderate obesity. This study is highly controversial however, and The National Sleep Foundation maintains that 8 hours of sleep is optimal, claiming improved performance in tests, reduced risk of accidents and a better immune system.[citation needed] A widely publicized 2003 study performed at University of Pennsylvania School of Medicine demonstrated that cognitive performance declines with less than eight hours of sleep"