That is why I don't go to the gym as there are too many posers. My pet hate is when they don't wipe the equipment down leaving their sweat behind. I just find it gross and have my own pieces set up at home because of this. I have no idea where grunting came from as it does nothing for you. Have you watched tennis lately as they are known to have become screamers as well.
i was thinking about tennis while i was writing this. I think it was Monica Seles that was actually warned by the officials that she was going to have points taken away if she didn't stop screaming on every hit.