I recently saw an old-time guide to handwriting; it started with the explanation that many people have too much tension when they write (even in facial muscles) and that the right way is to be very much relaxed so the writing just flows out. (Naturally, it implied using a fountain pen, not something you have to press down to write.) This coincides very much with other "right ways" I know about in dancing and other physical activities - too much tension is a very common habit among people.