system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why do we sometimes sweat excessively when sleeping?

Last night, after an hour and a half of sleeping, I woke up and my bed sheets were soaked with sweat, as in you could actually see patches, not just damp.
How come I don't subconsciously throw the duvet off myself iny sleep, or even wake up before I start to sweat excessively?
gpt
There's a lot of reasons, one person mentioned being overweight already, you could possibly have eaten a huge meal before bed and that could cause it, you might have had a nightmare and then the sweating would be due to excess nervous stimulation (sympathetic response), or you might be like me and life in a place where it is really freaking hot and you don't have AC yet. This list is probably pretty inexhaustive because there are a lot of reasons people sweat.