system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do we get "the bends" when we climb down a mountain too fast but, we can jump out of a plane thousands of feet in the air and land in a matter of minutes without negative effects?
gpt
It's actually in the other direction, going from high pressure to low, that causes the problems.

People who skydive must wait 24 hours after going scuba diving, due to the risks created by blood gases that have not had enough time to return to "sea level" concentrations. 

(and it's not the skydive that causes the problem, it's the ascent to 14,000 or so feet in an unpressurized aircraft...)