the.com/jitters
the body rehearsing for a danger your calendar invented.
adrenaline sourceSame hormone fuels stage fright and bear escapes.
caffeine linkBlocks adenosine, leaving nerves with no off switch.
micro-tremorsHands shake at roughly ten wobbles per second.
survival originEvolved to make prey flinch before predators pounced.
contagiousWatching anxious people raises your own heart rate.