system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why do things seem so much funnier when we're "over-tired"?
gpt
Your brain releases bursts of dopamine when it's sleep deprived. This causes euphoria, but can also cause reckless decision making. The euphoria is why you get so giggly and delirious, basically your brain is getting a bath in happy chemicals.