The human body is a self-sustaining and self-repairing entity. When you cut your hand, when you blister your foot, or when you burn your tongue, you know — and you take it for granted — that somehow, miraculously, your body will heal itself. All it needs is time. However, there are many injuries that are simply too severe for the body to repair by itself: in these cases, help may be needed in the form of lotions, medicines, or even surgery. Why is this so? With all its vast resources, what is it that the human body finds so difficult and so time-consuming in healing a few simple cuts and bruises? Surely — with a little bit of help, and a lot more conscious concentration — we should be capable of repairing so much more, all by ourselves.