For my morning warm ups I drew some sketches of Shunya Yamashita's work (though I prefer the older traditional style and not the digital air brush). Really great posing and fun drawing style. I really notice for myself that its handy to draw a little stickfigure first, this helps to remind you of the BASIC idea of the pose and not get lost in copying detail (unless that's what you are investigating).
Also stumbled on this video of Stan Lee, which is both educational and funny, so check it out!
Additionally did some pose doodles related to "drinking"..drawing stickfigures be hard!