system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why it's important to stay awake after a concussion.
gpt
Staying awake doesn't help with the concussion, it helps the people around you (doctors, paramedics, etc) tell if you're experiencing any sort of brain damage.  If you can't talk, they can't ask you how you feel or tell if your speech is slurred or ask you if you remember your name.  If your eyes are closed, they can't check for pupillary response to light or see if they can follow moving objects.