system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why do our hands shake when we are nervous?
gpt
It’s a component of the fight-or-flight response. Your muscles essentially get prepared to either help you get away from the stressor, or fight it off. This is caused by the release of adrenaline when you notice a stressor. Adrenaline speeds up how quickly your muscles contract, which can lead to twitching (especially around a particularly intense stressor)