system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 when you punch someone in the face and they immediately lose consciousness what just happened?
gpt
Your brain is floating in a lot of liquid inside your head. When you get hit hard enough, your skull will move as your head does and your brain will bash into it, like a passenger hits the dashboard in a car accident. This can cause enough of a disruption in your brain that you fall asleep.