system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does water temperature feel so different than air temperature?

Walking around in 30°C (86°F) weather feels so much warmer than taking a shower with the same temperature, why is that? I know our body temperature has to do with it, but both water and air touch our skin before they affect anything else, right?
gpt
Water is a decent thermal conductor compared to air. Air molecules are in a gaseous state and most of a gas is empty space. So the chances of an air molecule bumping into you and stealing your energy is far lower than water (a liquid that is waaaay more jam-packed with molecules).