Chronotypes define individual sleep-wake cycles and peak daily energy periods. Aligning routines with chronotype improves sleep quality and daily productivity. Natural light exposure and consistent ...
Sleeping underwater might sound peaceful — but for ocean animals, it’s a matter of survival. Some dolphins sleep with one half of their brain at a time, keeping one eye open to avoid danger and ...
Sleeping for only a few minutes at a time? While this might sound like a true ordeal for humans, it's no problem for some ...
AI-generated summary reviewed by our newsroom. Read our AI Policy. Are you a bear, wolf, lion or dolphin? You may not think any of these wild animals have to do with sleep. However, they actually ...