Watkiss modeled the torso as anterior slings (obliques, rectus abdominis) pulling against posterior struts (erector spinae, trapezius). PDFs often show diagonal hatching over the ribcage to indicate force direction.
Watkiss’s method is distinct for its focus on "design shapes" rather than just rote memorization: John Watkiss | PDF | Philosophy | Art - Scribd john watkiss on anatomy pdf
Instead of downloading illicit PDFs, students should: Watkiss modeled the torso as anterior slings (obliques,