Lecie, one of the things I've done is study animation--particularly old style animators like the Disney studios (not computer-generated images, which is as much a study of computers as art). An animator is the expert at suggesting movement, and if there are books or online tutorials about animation, you will also see how it relates to an understanding of both the human figure and perspective. It is one of the most difficult things to get the hang of, but it is also (at least for me) one of the most fun.