After a night at a loud club , concert, watching an exciting action film in a movie theatre with a high performance surround sound system, or a visit to the stadium with blaring songs to support the team, the ear finds peace with great difficulty and often rebels the next day with weird sounds and restricted hearing.
That is a warning signal! Everyone should use noise cancelling earplugs the next time they visit such an event. While strict legal regulations exist in the work area, each is left to fend for himself in personal life.
When one dances or sings or cheers along, the ability to correctly judge the stress on the ear is greatly reduced. Sound volumes over 85 dB that are generally so stressful in traffic or while working with machines that one is forced to cover his or her ears, sometimes do not bother people when one is in front of a stage, in a movie hall, or at a stadium.
Many musicians have identified this problem, not least due to the example of colleagues with hearing damage or even deafness and have taken recourse to ear protection.