You heard them all already: grunters, squealers, screamers, love makers, tire deflators, etc. STOP IT! JUST STOP IT! 
I mean Jesus- your strength doesn’t increase the more noise you make! (At least for the majority) I’m sure squatting 500 lb. may force you to make sounds like a busted tire, but let’s face it- most people just need to learn how to breathe. Its gets bad when a few people are sounding off. I’ve heard shouting matches, duets, and choirs. What’s that about? Nothing breaks your concentration like a person sounding like they got an orgasm on the bench press machine next to you. This is a gym people-not a recording studio! Granted these small animal noises may make someone feel dominant but it gets ridiculous when a woman is making erotic sounds and has me thinking I’m in the middle of an adult video. Now I get the whole sike yourself up thing, but there needs to be discretion. I think its a problem if people are scheduling their work outs around your vocal performances. So please tone it down, or get a room.
What do you think? Email me!
All the best and God Bless,
Ammo Athletics