I had to quit an exercise class to it essentially turning into a musical torture chamber. They upgraded their speaker system to mega club levels with base bins and massive hanging speakers.

The volume was so loud and the music so intense I actually had to stop at times and block my ears. This sounds melodramatic but it is honestly ridiculous.

After those few classes I went to I would have ringing in my ears for a few hours, and my ears would feel very blocked. I also noticed I became a lot more agitated and anxious afterwards.