I've said it before and I'll say it again, Bridgman is real stylistic! But his style is really helpful (I say this now 'cause I stopped being stubborn ) . He somehow teaches fluidity, which I don't think anyone is supposed to be able to teach. It's something you're supposed to come by.. And he also shows you how to break up the human form into shapes, as Digitally said.
Here's a PDF of his "Complete guide to drawing from life"