Sleep is a magical phenomenon. When you are a good sleeper, you close your eyes and, before you know it, you go on a journey into a wonderful world beyond full consciousness.

Sleep has hardly changed since Paleolithic humans snoozed soundly in their caves. While sabre-toothed tigers were their biggest night-time worry, today it’s stress and social media …

This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit nextbigwhat.substack.com/subscribe