“Does exercise help nerve regeneration?”

Yes, exercise can help with nerve regeneration but the proper exercises must be considered. The human body works by the old saying, "if you don't use it, you lose it." Even mental exercises of attempting to move the particular part of the body can help with regenerating the nerves. This process does not work instantly but may take several months. It can be frustrating but the idea is to stay positive and keep trying.

I do not think so. Please consult with a neurologist.