Posemaniacs!
POSEMANIACS is a terrific resource for artists who want to work on anatomy-- there are some great exercises there including 30 second poses which I'm a big fan of and will help you learn how to draw a figure with just a few strokes.
Check it out-- you won't be sorry.
And TONIGHT is the FINAL life drawing drop in class at WAM this semester-- if you've been meaning to stop in this is it.