I have a profound hearing loss caused by the hardening of the inner ear and it is supposed to be permanent but

I have noticed that I am starting to hear pretty good without my hearing aids and the only change I have made is that I started a exercise program about three weeks ago. My ear doctor says that there is no way that it can cause my hearing to get better but you can't argue with physical evidence. Am I crazy or has anyone else heard of this happening? I made an appt. with my audiologist for next month.