system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can't humans tolerate high temperatures of water when they can tolerate high temperatures of weather?

Hey Reddit,

Say, for example:

An average person can stand to be outside in 35 degrees Celsius weather, but if they put their hand into a bowl of 35 degrees Celsius water, they immediately can't stand it and take it out. Why is that? What is the difference?
gpt
There are two things going on: how well water conducts heat and how well you can sweat.

Water conducts heat much better than air, so when you put your hand in hot water your hand gets hot much faster than it would in the same temperature air. On top of that, sweating is your body's main cooling mechanism and it works very well in hot air, but it doesn't work at all in water.

So, in hot water, your hand it warming up faster and can't cool down.