system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 Why do we instinctually shake our hands when we hurt them, like when we punch something?
gpt
Okay.  So when you hurt your hand, nerves send signals to your brain that somethings wrong. We perceive that as pain.  When we flail our hands, your nerves feel more stimuli, drawing the affects of pain away from your brain.  To dumb it down even more.  Shaking your hands is essentially **masking** the pain with more nerves sending signals.