Sciencespeaking topic

Runner's high: in prolonged exercise the brain releases endocannabinoids that create a lightness and pleasure. If this feeling once attributed to endorphins is actually another system, why does pushing past the pain threshold make us happy?

— endocannabinoids and runner's high

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.