Is it harmful to wear headphones to listen to music during fitness?
There will be some. In fact, whenever you use headphones, you will hurt your ears. Ears have a lot to do with people's sense of balance, so listen less. But music like us, especially punk lovers, can't give up music. If your conditions permit, you can buy a small speaker, connect your player when you exercise, and it will be better to listen with headphones at ordinary times.