Sleep
Explore our latest articles on sleep to feed the curious you.
How to get more REM sleep explained
What REM sleep does, how much you actually need, and the habits that measurably increase it – based on sleep-stage data from Ultrahuman Ring members. …
Sep 19, 2026
How the Ultrahuman Ring tracks sleep stages
How the Ultrahuman Ring identifies light, deep and REM sleep from pulse, movement and skin temperature, and how to read the results.
Sep 16, 2026
Why a late bedtime still leaves you tired – even after 7 hours' sleep
Going to bed after midnight can still leave you tired, even with a full night's sleep. It's all to go with your circadian rhythm
Sep 15, 2026
How a consistent bedtime could improve your metabolism
New data from nearly 6,000 adults links bedtime consistency to overnight blood sugar control. Here's what the science shows and how to use it.
Sep 14, 2026
What your snoring is actually telling you
Snoring is treated like a joke – but it's an early, physical signal of airway health. Here's what it actually means, and what to do about it.
Sep 14, 2026
Why waking at 3AM could be your metabolism– and how to fix it
Updated: If you find yourself waking at 3AM regularly, it could be your metabolism. Here's what to watch out for
Sep 08, 2026
England v Mexico: How the 2am kick-off affected the nation’s sleep and recovery
Ultrahuman Ring data reveals how England's 2am World Cup kick-off against Mexico cut the nation's sleep, lowered HRV, and affected overnight recovery …
Jul 14, 2026
How an inconsistent sleep schedule takes its toll on your body
Ultrahuman research suggests inconsistent sleep elevates heart rate and impacts recovery
May 06, 2026
Ultrahuman-powered smart pillow shown to transform pro-gamers' sleep
The Tech Co Performance Pillow uses Ring AIR insights to promote REM sleep, reduce wake time, and help athletes get higher-quality rest
Sep 17, 2025