Sleep Science: Master Your Rest
Discover the science of sleep, circadian rhythms, and evidence-based strategies for better rest.
About This Quiz: Sleep
Sleep is the single most effective thing you can do for brain and body health. During sleep, the brain consolidates memories, clears metabolic waste via the glymphatic system, and the body repairs tissues, produces growth hormone, and rebalances hormones. Chronic sleep deprivation is now recognized as a risk factor for virtually every major disease.
Sleep deprivation impairs immune function (4-5 hours = 70% reduction in NK cells), promotes inflammation, disrupts appetite hormones (increasing ghrelin, decreasing leptin), impairs insulin sensitivity, and reduces cognitive performance equivalent to legal intoxication. Prioritizing sleep quality may be the single highest-leverage health intervention available.