Sleep
Explore our latest articles on sleep to feed the curious you.
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
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
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
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
What is your sleep chronotype and how it affects productivity
Discover your chronotype — Bear, Wolf, Lion, or Dolphin — and learn how it shapes sleep, focus, diet, and health. Align your routine with your biology
Sep 02, 2025
Why sleep is the hardest Tour De France stage to win
How Team Cofidis uses Ultrahuman Ring AIR to maximize recovery during the Tour de France
Jul 08, 2025
Caffeine and adenosine: The reason behind the coffee crash
How caffeine affects adenosine signaling, sleep, and energy. Learn why crashes happen and how to reset your tolerance for better cognitive performance
Jun 20, 2025
5 ways to supercharge your deep sleep
Learn why deep sleep matters, how much you need, and 5 science-backed ways to improve it — even as you age.
Jun 17, 2025
Introducing Caffeine Window upgrade: Now with real-time tracking and logging
Caffeine Window got personal with effortless tagging, real-time body caffeine levels and adaptable cut-off times.
Jun 13, 2025