Jim Allen

“the shorter your sleep, the shorter your life. The leading causes of disease and death in developed nations—diseases that are crippling health-care systems, such as heart disease, obesity, dementia, diabetes, and cancer—all have recognized causal links to a lack of sleep.”
― Matthew Walker, Why We Sleep: Unlocking the Power of Sleep and Dreams

“Routinely sleeping less than six or seven hours a night demolishes your immune system, more than doubling your risk of cancer.”
― Matthew Walker, Why We Sleep: Unlocking the Power of Sleep and Dreams

“After thirty years of intensive research, we can now answer many of the questions posed earlier. The recycle rate of a human being is around sixteen hours. After sixteen hours of being awake, the brain begins to fail. Humans need more than seven hours of sleep each night to maintain cognitive performance. After ten days of just seven hours of sleep, the brain is as dysfunctional as it would be after going without sleep for twenty-four hours. Three full nights of recovery sleep (i.e., more nights than a weekend) are insufficient to restore performance back to normal levels after a week of short sleeping. Finally, the human mind cannot accurately sense how sleep-deprived it is when sleep-deprived.”
― Matthew Walker, Why We Sleep: Unlocking the Power of Sleep and Dreams

“Ten days of six hours of sleep a night was all it took to become as impaired in performance as going without sleep for twenty-four hours straight.”
― Matthew Walker, Why We Sleep: Unlocking the Power of Sleep and Dreams