The Human Upgrade: Biohacking for Longevity & Performance How I Finally FIXED My Terrible Sleep After 18 Years : 1428
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Mar 8, 2026 He reveals that light, not sleep length, was wrecking sleep for 18 years and how sunlight timing resets your internal clock. Discussions cover how blue light at night destroys REM and deep sleep and why morning light kickstarts daytime energy. Practical tips focus on redesigning home lighting, using warm bulbs and blue-blocking glasses, and avoiding weekend sleep shifts that confuse your biology.
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Circadian Timing Beats Sleep Duration
- Sleep quality depends more on circadian alignment than total time in bed.
- Dave Asprey tracked sleep 18 years and says light-driven circadian timing, not hours, controls deep sleep, REM, hormones, and recovery.
Dave's 18 Year Sleep Tracking Revelation
- Dave Asprey spent 18 years tracking his sleep and discovered his problem was light, not duration.
- He realized sleeping eight hours still left him exhausted because his circadian cues were misaligned by light exposure.
Circadian Rhythm Controls Performance And Safety
- Circadian rhythm controls far more than sleep: alertness, memory, coordination, willpower, and hormone cycles are all tied to light cues.
- NASA studies and real-world disasters (Challenger, Exxon Valdez) illustrate performance failures from circadian disruption.