system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is a hot bath or shower so comfortable and warm but weather at the same temperature would be (almost literally) hell?
gpt
You don't have to breathe in hot bath or shower water. The air is still decent. 

But take a hot shower with the fan off and the room sealed up, the weather will get pretty bad in there. 

Conversely, if you stand outside in 95F degree heat, but wear a rebreather with a hose going inside to 65F degree AC, or just stick your face inside, you feel pretty good! 

TL:DR - a lot of the misery from heat comes from breathing it.