system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do humans feel "lost and confused" after waking up from slumber?
gpt
More or less because your brain was in hibernation mode and is booting back up to full functionality. While sleeping, your brain activity looks nothing like the activity while awake. The fact that you lose so much time while asleep is because the part of your brain which measures the passage of time is literally turned off. You don't form memories (Other than dreams, which usually only happen in the lightest form of sleep) while asleep because your memory centers are down for maintenance. You don't think because the thinking bits of your brain are scrambled and behaving very differently than while awake.

You more or less turn off when sleeping. Your body keeps running, but the stuff that makes you, you? Not functioning normally. Turning you back on takes some time.