system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why do women tennis players scream as if they were having an orgasm when they play? is that suppose to give them more power or is it just a way to fuck with the opponent?
gpt
It's mostly derived from a tenet of many Asian martial arts.  A vocal exclamation adds force to a physical action.

It happens a lot in Karate and other martial arts competitions.

A vocal "Hayyaahh!" is used to reinforce the physical action being performed.  It's a psychological idea that actually works quite well.