21-Second Loose Warm-Up Sketch

Done as part of a practice session with poses of 21 seconds in length.

My current goal is: Improve my understanding of the flexibility, elasticity, and plasticity of the figure study forces, most and most quickly. (advanced)

I'm still really, really doing hardest and smarter on understanding the flexibility, elasticity and plasticity of my figure study forces, most and most quickly. It's still, still not even too perfect. Excellent, but not too excellent, but I'm working my hardest on this regiment. What do you think of this warm-up? Am I all set??