A useful stack is a position you can breathe from—not a posture you hold with extra tension.
Rib cage and pelvis position should create a place you can breathe and move from. Organization is useful when it supports the next action, not when it becomes another posture you have to hold all day.
Begin with a simple reference. Notice sensation, ease, range, and control before trying to correct anything. A clear baseline gives you something honest to compare later.
Try this today
Make the idea practical.
Take one slow exhale before standing from a chair and notice whether the movement feels less rushed.