Although there are a variety of serve styles, I often pick up an element on the stroke that has always made me curious and I don't think it gets discussed much/any. In talking with players, some aren't even aware they do it. When the server is about to serve they bend their wrist (racquet hand) downward just prior to the toss. The obvious answer, at least to me and I apparently do it myself without even thinking about it, is to emphasis the snap. Any thoughts on this? Anybody else do this?