system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why, when I'm watching TV at night, is it easy to doze off, but when I go upstairs to bed in a dark room, I'm immediately wide awake?
gpt
You're relaxed, your mind is in neutral.  And you've been sitting there for perhaps half an hour or more.  But to go to bed, you must get up, walk the dog, perform your ablutions, etc. By the time you climb into bed, you need some time to get relaxed and in neutral again.