Sciencespeaking topic

We fall asleep as our body temperature drops: a hot shower paradoxically cools you down and helps you sleep, because blood rushes to the surface of the skin and dumps heat outward. Why does heat cool you?

— thermoregulation and sleep onset

practice with this topic

Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.