Devon Seegers

“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.”
― Matthew Walker, Why We Sleep: Unlocking the Power of Sleep and Dreams

“Why, then, would we expect sleep—and the twenty-five to thirty years, on average, it takes from our lives—to offer one function only?”
― Matthew Walker, Why We Sleep: Unlocking the Power of Sleep and Dreams

“Irwin demonstrated that a single night of four hours of sleep—such as going to bed at three a.m. and waking up at seven a.m.—swept away 70 percent of the natural killer cells circulating in the immune system, relative to a full eight-hour night of sleep. That is a dramatic state of immune deficiency to find yourself facing, and it happens quickly, after essentially one “bad night” of sleep.”
― Matthew Walker, Why We Sleep: Unlocking the Power of Sleep and Dreams

“Similarly problematic is baseline resetting. With chronic sleep restriction over months or years, an individual will actually acclimate to their impaired performance, lower alertness, and reduced energy levels. That low-level exhaustion becomes their accepted norm, or baseline. Individuals fail to recognize how their perennial state of sleep deficiency has come to compromise their mental aptitude and physical vitality, including the slow accumulation of ill health.”
― Matthew Walker, Why We Sleep: Unlocking the Power of Sleep and Dreams