Matthew Walker Quotes

...caffeine is a stimulant drug. Caffeine is also the only addictive substance that we readily give to our children and teens.

Sleep is the single most effective thing we can do to reset our brain and body health each day -- Mother Nature's best effort yet at contra-death.

As many have said about such stoic institutions: theories, beliefs, and practices die one generation at a time. But the conversation and battle must start somewhere.

When we are awake we are looking through the wrong end of the telescope if transformational creativity is our goal. We take a myopic, hyperfocused, and narrow view that cannot capture the full informational cosmos on offer in the cerebrum. When awake, we see only a narrow set of all possible memory interrelationships. The opposite is true, however, when we enter the dream state and start looking through the other (correct) end of the memory-surveying telescope. Using that wide-angle dream lens, we can apprehend the full constellation of stored information and their diverse combinatorial possibilities, all in creative servitude.

To sleep, perchance to heal.

Forcing youthful brains to become early birds will guarantee that they do not catch the worm, if the worm in question is knowledge or good grades.

While some have contested how accurate or sound the Edina test case is, well-controlled and far larger systematic studies have proved that Edina is no fluke. Numerous counties in several US states have shifted the start of schools to a later hour and their students experienced significantly higher grade point averages.

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I suspect that you cannot recall any truly significant action in your life that wasn't governed by two very simple rules: staying away from something that would feed bad, or trying to accomplish something that would feel good. This law of approach and avoidance dictates most of human and animal behavior from a very early age.
The forces that implement this law are positive and negative emotions. Emotions make us do things, as the name suggests (remove the first letter from the word). They motivate our remarkable achievements, incite us to try again when we fail, keep us safe from potential harm, urge us to accomplish rewarding and beneficial outcomes, and compel us to cultivate social and romantic relationships. In short, emotions in appropriate amounts make life worth living. They offer a healthy and vital existence, psychologically and biologically speaking. Take them away, and you face a sterile existence with no highs or lows to speak of. Emotionless, you will simply exist, rather than live.

After four hours of sleep for six nights, participants' performance was just as bad as those who had not slept for twenty-four hours straight--that is, a 400 percent increase in the number of microsleeps. By day 11 on this diet of four hours of sleep a night, participants' performance had degraded even further, matching that of someone who had pulled two back-to-back all-nighters, going without sleep for forty-eight hours.

Earlier I described the component stages of sleep. Here, I reveal the attendant virtues of each. Ironically, most all of the "new," twenty-first century discoveries regarding sleep were delightfully summarized in 1611 in Macbeth, act two, scene two, where Shakespeare prophetically states that sleep is "the chief nourisher in life's feast."* Perhaps, with less highfalutin language, your mother offered similar advice, extolling the benefits of sleep in healing emotional wounds, helping you learn and remember, gifting you with the solutions to challenging problems, and preventing sickness and infection. Science, it seems has simply been evidential, providing proof of everything your mother, and apparently Shakespeare, knew about the wonders of sleep.

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*"Sleep that knits up the ravell'd sleeve of care,
The death of each day's life, source labour's bath
Balm of hurt minds, great nature's second course,
Chief nourisher in life's feast,--"
William Shakespeare, Macbeth, Folger Shakespeare Library (New York: Simon & Schuster; first edition, 2003).

the shorter your sleep, the shorter your life span

When sleep is abundant, minds flourish. When it is deficient, they don't.

When we compared the effectiveness of learning between the two groups, the result was clear: there was a 40 percent deficit in the ability of the sleep-deprived group to cram new facts into the brain (i.e. to make new memories), relative to the group that obtained a full night of sleep. To put that in context, it would be the difference between acing an exam and failing it miserably!

Yet something even more profound has happened in this ongoing story of later school start times - something that researchers did not anticipate: the life expectancy of students increased. The leading cause of death among teenagers is road traffic accidents, and in this regard, even the slightest dose of insufficient sleep can have marked consequences, as we have discussed. When the Mahotomedi School District of Minnesota pushed their school start time from 7:30 to 8:00 a.m., there was a 60 percent reduction in traffic accidents in drivers sixteen to eighteen years of age.

People consuming even moderate amounts of alcohol in the afternoon and/or evening are thus depriving themselves of dream sleep.

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.

Humans are not sleeping the way nature intended. The number of sleep bouts, the duration of sleep, and when sleep occurs has all been comprehensively distorted by modernity.

Most people think nothing of losing an hour of sleep for a single night, believing it to be trivial and inconsequential. It is anything but.

First, after waking up in the morning, could you fall back asleep at ten or eleven a.m.? If the answer is "yes," you are likely not getting sufficient sleep quantity and/or quality. Second, can you function optimally without caffeine before noon? If the answer is "no," then you are most likely self-medicating your state of chronic sleep deprivation.

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.

Caffeine is not a food supplement. Rather, caffeine is the most widely used (and abused) psychoactive stimulant in the world.

Driving drunk or driving drowsy were both dangerous, and equally dangerous.