Notes on sleep, rest, and reclaiming presence.
Evidence-backed pieces, written in plain language. No streaks. No shame. Just what helps you actually sleep.
The sound machine hums all night. Your REM sleep, quietly, does not.
A 2026 polysomnography trial from Penn Medicine watched 25 adults sleep under pink noise, traffic noise, and earplugs. The sound machine that's supposed to help you rest may quietly cost about 19 minutes of REM.
The room is dark. The list is still open.
Racing thoughts, not worry, are what keep most insomniacs up. A five-minute writing habit — specific, on paper, before you lie down — outperforms trying to relax.
Your phone starts the conversation. Two switches stop it.
Two iOS settings — Raise to Wake and Tap or Swipe to Wake — let your phone light up before you decide to look. Here's what the attention and parenting research says, and how to flip both off tonight.
You spent the day indoors. Your body thinks it's still winter.
The conversation about screens at night skips half the story. A 2024 PNAS study in 88,905 adults shows that darker days predict mortality risk as clearly as brighter nights — and most of us never see real daylight.
The chair has had you since nine, and your sleep tonight already knows
Sitting still all evening costs you sleep you'll never feel losing. The 2024–2025 movement data is small, specific, and quietly hopeful — and what to do at 7pm tonight.
The body keeps running after the run is over
A 2025 study of 4 million person-nights found exactly how late an evening workout can run before it costs you the night. The buffer is gentler than you'd think.
The alarm rings, and you reach for snooze. The science is more complicated than your boss thinks.
More than half of us hit snooze every morning. A 2025 global study quantifies what it costs — and a 2024 Karolinska trial complicates the productivity-bro take. What to do tomorrow morning.
The 3pm coffee is still in the room at midnight
Caffeine doesn't just delay sleep. New 2025 evidence shows it keeps your brain in a more activated, less restorative state long after you've drifted off.
The body falls asleep by cooling down, not by lying still
A warm shower 60–120 minutes before bed shortens sleep onset by about a third — not because it relaxes you, but because it tells your body it's safe to dump heat.
The shape of your week matters more than the size of your sleep
Eight hours on Tuesday, four on Wednesday, eleven on Saturday — same average, different body. The 2024 data on sleep regularity, and what to protect tonight.
The night before was a meeting. The night itself shouldn't be.
Most evenings, your phone is the only thing you negotiate with. Here's what the science says happens when you stop — and what to do instead.
The architecture of the night, borrowed from astronauts
Artemis II just flew. Its crew slept on a schedule designed by sleep scientists. Here's what they did — and what the architecture of an astronaut's night can teach yours.