system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does my ceiling fan make me feel cool in a hot room? Isn't it just blowing the hot air from the room directly at me?
gpt
It mostly comes down to sweat. The moving air allows the sweat on your skin to evaporate faster which cools you down. If the air wasn't moving then the small bit of air that was directly next to your skin would quickly become saturated with water and so couldn't absorb any more of your sweat. By moving the air around you make sure that new air is always coming in contact with your skin.