Sunset Light: The Cue That Tells Your Body to Sleep
Morning light gets all the attention. Evening light may matter more for sleep onset. The mechanism — and the fix.
Category
Circadian Rhythm
Your body runs on a 24-hour clock anchored by light, temperature, food timing, and behavior. When the clock is aligned, everything works better. When it drifts, sleep is the first thing to break.
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Articles in Circadian Rhythm
Shift Work and Sleep: The Best Protocols Researchers Recommend
Working nights wrecks your circadian rhythm — but there are specific protocols that minimize the damage. Here is the playbook.
The Cortisol Awakening Response: Why You Wake Up Wired
The 30-minute cortisol spike after waking is supposed to be sharp and clean. When it's not, you feel it for the rest of the day.
Why Night Owls Are Genetically Different (And What to Do About It)
Chronotype is largely heritable. Forcing a night owl into an early-bird schedule has measurable health costs. Here is how to work with your wiring.
Blue Light and Sleep: Separating Myth from Science
Blue light glasses are everywhere. The research is more nuanced than the marketing. Here is what actually moves the needle.
Jet Lag: The Fastest Way to Reset Your Body Clock
The single best jet lag protocol uses light timing, fasting, and one specific bedtime trick. Most over-the-counter "jet lag pills" are theater.
The 14-Hour Eating Window: How Time-Restricted Eating Helps Sleep
Eating early and stopping early aligns the gut clock with the brain clock. The sleep benefits are larger than most fasting advocates realize.
Morning Light, Melatonin, and Your Internal Clock: A Practical Guide
Ten minutes of outdoor light within an hour of waking is the single most underrated sleep intervention. Here is the circadian biology — and the protocol — that actually works.
Do Blue Light Glasses Actually Work? (What the Research Says)
The honest answer is: it depends entirely on which lens you bought. Daytime computer-strain glasses do almost nothing for sleep. Amber lenses worn 2-3 hours before bed have real, replicated melatonin-protection effects.