Sciencespeaking topic
Caffeine doesn't cut off sleepiness, it 'hides' it: it blocks the adenosine receptors in the brain while adenosine keeps building up. Why are we twice as tired once the coffee wears off?
— adenosine receptor antagonism
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.
similar topics
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