On one of my posts I mentioned that I had some bruising on my knee. Now I'm noticing that I have some bruising in my forearms. I've been doing a lot of circles with my elbows and wrists and I think the torque is breaking up the adhesions and tight tissues, causing the bruising. So in my opinion, it's a good thing. I have no nerve pain or tingling, so it's not hurting the nerves any. My elbows and wrists are actually starting to feel better than they have in quite a while.