Watching Cornet play Lucic-Baroni here in San Diego at 3:14am and I might as well be watching Bangbros! Had to turn down the sound out of respect for my neighbor's kids.
It is the only sport I can think of in which this happens.
WTF is this all about?
Why do women do it more than men?
Why only Tennis?
It makes some matches un-listenable, others kind of intriguing.
Is it an advantage?: intimidating, masking the sound of contact like ping pong?
Or is it a dis-advantage?: waste of breath, a tell?
What a strange human behavior.