If you were not to set an alarm clock, would you sleep past it? If the answer is yes, then there is clearly more sleep that is needed. Matthew Walker More Quotes by Matthew Walker More Quotes From Matthew Walker The gross demonstration of caffeine is that it prevents you from falling asleep. The slightly more nefarious aspect of caffeine is that maybe you can fall asleep, but we know that the depth of deep sleep you're getting if caffeine is still in your system is severely less. Matthew Walker deep you sleep fall No one would look at an infant baby asleep, and say 'What a lazy baby!' We know sleeping is non-negotiable for a baby. But that notion is quickly abandoned. Matthew Walker say look know baby If we didn't need eight hours of sleep and could survive on six, Mother Nature would have done away with 25 percent of our sleep time millions of years ago. Because when you think about it, sleep is an idiotic thing to do. Matthew Walker you nature mother time Based on the science, you can make somewhat clear statements: The number of people who can survive on six hours of sleep without impairment is zero. Matthew Walker you sleep science people Your subjective sense of how well you're doing under conditions of sleep deprivation is a miserable predictor of, objectively, how you actually are doing. Matthew Walker your doing you sleep
