Though they're really low. I had the chance to find out if I do or not. To make a long story short, I was cleaning my katana and ended up slicing my finger open. It wasn't some small wound, it went down about an 1/8th of an inch into my middle finger. (Boy did it hurt. In my fit to stop the pain after the initial damage, I shook my hand naturally and got blood all over the bedroom). Now, I am studying Kenjutsu so I can learn how to properly use my katana, and I knew that the moves I needed to do, I needed my finger! So, that night, I laid there for about an hour bringing energy around my finger, visualizing a sphere of white healing light. I figured, normally, it would take it about 3 weeks to heal, knowing how my healing goes (Normally I heal completely in a little over a week with a decent cat-scratch). I visualized it healing from the bottom up. I wanted the wound to close and I kept it semi protected for the first 3 days. After the three days, I didn't cover it anymore - I was amazed that it was possible, knowing how deep the wound was. About a week later, it was nearly healed. Only a small scab remained. While I still gave it some time at night, I also noticed I could surround whatever part of my body that was injured with energy and it would help it immensely. (my spine had been damaged back in December and I let the energy do what it wanted. a blue light came up both sides of my spine and a while one spiraled around the lower half of my spine. A week later, I had no more problems (I was getting chills in my leg, pricklies on my ear - it was bad enough my neurologist wanted to see me in fear something had happened). (This was like 3 weeks ago) Now, there's only a mark, as I stopped healing it when I was satisfied that it was healed and could do the rest on it's own. However, I have lost all feeling at the initial cut and I am not sure it will come back. It doesn't affect my swings in any way, so I don't mind, but I do wonder in the back of my mind if I had kept it up if the nerves would have fixed themselves.