Ever wondered why every creature—from humans to brainless hydra—needs to sleep?
This episode takes you back 2 billion years, when oxygen was poison and life was fighting to survive.
Discover how ancient cells invented the very first biological clock, why sleep became our built-in repair system,
and how modern life—blue light, caffeine, and 3 A.M. scrolling—has broken that rhythm.

Funny, curious, and deeply human—this story reminds us that sleep isn’t laziness.
It’s evolution’s oldest act of self-defense.

🛒 The Curiosity Shop → oddbbo.com