Notes on rhythm and light, written after living with it rather than reading about it.

Separate two things in structuring the first hour after waking: the outcome you want and the action you can sustain. When the gap is too wide, shrink…

Put how morning light sets the clock back into a real week, with overtime, travel and days you cannot be bothered. Any plan that only survives good…

Put the half-life of caffeine back into a real week, with overtime, travel and days you cannot be bothered. Any plan that only survives good months…

Most people do not fail at a two-hour pre-bed checklist from misunderstanding it. They fail because understanding is not doing. What follows is the…

If you only read one paragraph, read this: shift work without wrecking your week depends on how the situation is set up, not on how you feel at the…

Let us set the limits of the right order after a night shift first: it reliably improves a working feel for your own baseline, and it does not…

If you have already tried tracking sleep without obsessing and dropped it, the fault is usually in the setup: a starting point set too high, an…

Separate two things in alarm setups for heavy sleepers: the outcome you want and the action you can sustain. When the gap is too wide, shrink the…

If you only read one paragraph, read this: what to do instead of scrolling in bed depends on how the situation is set up, not on how you feel at the…

Anyone who has spent time on naps and neck pain has a failure story: a strong start, a collapse in the middle, then silence. This is not another…

There is plenty written about how long natural waking takes and little you can act on. This piece stays concrete: every action can be done on the…

Separate two things in can a disrupted clock be reset: the outcome you want and the action you can sustain. When the gap is too wide, shrink the…

If you only read one paragraph, read this: how soon to eat after waking depends on how the situation is set up, not on how you feel at the time.…

There is plenty written about evening exercise and sleep onset and little you can act on. This piece stays concrete: every action can be done on the…

Most people do not fail at light, mood and the short days from misunderstanding it. They fail because understanding is not doing. What follows is the…

Let us set the limits of handling jet lag on arrival first: it reliably improves a body that copes with season changes, and it does not deliver…

Advice on why a fixed wake time beats a fixed bedtime tends to split in two: impossibly complex, or sold as one click. Reality sits between. It needs…

Most people do not fail at eight hours and still tired from misunderstanding it. They fail because understanding is not doing. What follows is the…

Most people want how to take a twenty-minute nap to make things better. The workable version of that goal is steadier: a floor you can hit on a bad…

If you only read one paragraph, read this: what weekend catch-up sleep really fixes depends on how the situation is set up, not on how you feel at…