"Routinely sleeping less than six or seven hours a night demolishes your immune system, more than doubling your risk of cancer."

"Insufficient sleep is a key lifestyle factor determining whether or not you will develop Alzheimer's disease."

"Inadequate sleep - even moderate reductions for just one week - disrupts blood sugar levels so profoundly that you would be classified as pre-diabetic."

"If you don't sleep the very first night after learning, you lose the chance to consolidate those memories, even if you get lots of "catch-up" sleep thereafter. In terms of memory, then, sleep is not like the bank. You cannot accumulate a debt and hope to pay it off at a later point in time. Slee...

"The shorter your sleep, the shorter your life."