system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Whats happening when I wake up and my neck hurts and is so stiff I can barely move it?
gpt
Torticollis. Short form, you slept weird stretching the muscles in your neck. Pain should last a day. If it's consistent pain over a longer period of time, then get it checked out. There's a billion questions to ask, but that's the most likely answer, without getting into your medical background.