Seems like a trend with gym classes. Spin in particular. https://www.vox.com/science-and-health/2018/5/31/17393394/spinning-cycling-exercise-loud-music-hearing

Seems like a trend with gym classes. Spin in particular. https://www.vox.com/science-and-health/2018/5/31/17393394/spinning-cycling-exercise-loud-music-hearing-loss https://www.vox.com/science-and-health/2018/5/31/17393394/sp...