I had this feeling when putting on those Bose over-ear ANC headphones. Incredibly uncomfortable. The JBL ones I had after were way less ‘active’ and didn’t cause discomfort, but they also didnt do a great job. Now im using just noise to mask other noises and it’s ok, but have the feeling it might not be very healthy to your hearing in the long run. Any research about ANC and hearing loss done btw?