Sleep
Routines, supplements, and gear for better sleep.
9 articles
Why Caffeine Keeps You Awake (Until It Doesn't)
Caffeine doesn't give you energy — it blocks the signal telling your brain you're already tired. Here's the adenosine mechanism behind the boost, and why the crash can hit harder than the tiredness you started with.
The Deep Sleep That Cleans Your Brain
Every organ has a dedicated waste-clearance system except the brain — or so it seemed. Here's the glymphatic system, discovered in 2012, and why it only really runs during deep sleep.
Reclaiming Midnight Oxygen
How much room your diaphragm has to move at night depends on posture. Here's the sleep position and pillow setup that stops it from being compressed — one swap that measurably improves overnight breathing efficiency.
Chasing the Yawn
A pre-sleep yawn cascade is a green light, not a nuisance. Here's how to use your brain's own cooling signal on purpose, through breath and light dimming, to turn it into a reliable bedtime cue.
The 3am Reset
Now that you know why the 3am wake-up happens, here's how to flatten it: bedroom temperature, blackout timing, and why magnesium glycinate specifically is the form that blunts the spike.
The Silent Work of the Diaphragm at Midnight
Your diaphragm never clocks out at night — it just changes how it works, stage by stage. Here's how breathing shifts across sleep, and how posture quietly affects how efficiently it can do its job.
What Your Yawn Is Actually For
It's not boredom and it's not a lack of oxygen. Here's the brain-cooling theory behind yawning, why it spikes around sleep, and why it spreads across a room without anyone deciding to.
The 3am Wake-Up Nobody Can Explain
You didn't imagine it: your body runs a hormonal rehearsal for waking hours before your alarm. Here's what's actually happening at 3am, and why sleep is so easy to break out of by then.
Best Sleep Tracker of 2026: We Tested 7 for 90 Days
We wore the top sleep trackers for 90 nights. Here's which one actually helped us sleep better — and which were a waste of money.