This was a question raised awhile back somewhere else. Where do you "rest" your non-attacking fist? For me I was always taught to "rest" it on my hip, but someone suggested that I should try resting it on the side of my chest, just below the pecs. The reason being was, although looking and feeling a little silly for me, it generates more power, as it allows the arm to move in a more natural way. Try it and report back. Then if anyone can tell me the reason for the "rest" position in their style, that would even better!!