The Rhythm and Light archive: start at the top, or jump to what you need.

Most people want what to do instead of scrolling in bed to make things better. The workable version of that goal is steadier: a floor you can hit on…

Let us set the limits of naps and neck pain first: it reliably improves steadier sleep, and it does not deliver overnight. Anything promising results…

Anyone who has spent time on how long natural waking takes has a failure story: a strong start, a collapse in the middle, then silence. This is not…

Anyone who has spent time on can a disrupted clock be reset has a failure story: a strong start, a collapse in the middle, then silence. This is not…

If you have already tried how soon to eat after waking and dropped it, the fault is usually in the setup: a starting point set too high, an…

Put evening exercise and sleep onset back into a real week, with overtime, travel and days you cannot be bothered. Any plan that only survives good…

Let us set the limits of light, mood and the short days first: it reliably improves energy that holds through the afternoon, and it does not deliver…

Separate two things in handling jet lag on arrival: the outcome you want and the action you can sustain. When the gap is too wide, shrink the action…

Most people want why a fixed wake time beats a fixed bedtime to make things better. The workable version of that goal is steadier: a floor you can…

Advice on eight hours and still tired tends to split in two: impossibly complex, or sold as one click. Reality sits between. It needs some patience…

Let us set the limits of how to take a twenty-minute nap first: it reliably improves a body that copes with season changes, and it does not deliver…

Most people do not fail at what weekend catch-up sleep really fixes from misunderstanding it. They fail because understanding is not doing. What…

Anyone who has spent time on getting to bed before eleven has a failure story: a strong start, a collapse in the middle, then silence. This is not…

Put recovering from a late night back into a real week, with overtime, travel and days you cannot be bothered. Any plan that only survives good…

Let us set the limits of structuring the first hour after waking first: it reliably improves a body that copes with season changes, and it does not…

Most people do not fail at how morning light sets the clock from misunderstanding it. They fail because understanding is not doing. What follows is…

Most people want the half-life of caffeine to make things better. The workable version of that goal is steadier: a floor you can hit on a bad day.…

If you only read one paragraph, read this: a two-hour pre-bed checklist depends on how the situation is set up, not on how you feel at the time.…

If you have already tried shift work without wrecking your week and dropped it, the fault is usually in the setup: a starting point set too high, an…

If you have already tried the right order after a night shift and dropped it, the fault is usually in the setup: a starting point set too high, an…