Lately, I am learning that the postural support system and the systems for movement planning are separate. Letting go of the planning agenda and muscles that execute that plan does not mean that the postural support (or shall we say personality support/sense of self) will disengage - even though it for sure feels like that.

This is relevant to Alexander Technique study, when the teacher might suggest that you give up your plan because it’s full of habitual tension, and focus on seemingly esoteric concepts like non-doing or directing. Suddenly you feel your upright balance and your mind as free and light, and the process of getting there is inexplicable. It seemed to happen to you.

An example of this phenomena might be the YouTube baby balancing clips...infants don’t have the ability to move their own feet to maintain balance, but they can stay upright if the parent adjust their feet under their center of mass. This is likely due to our postural support working, independent of balance and motor planning.
https://m.youtube.com/watch?v=4n_6yRZeRKM

How much holding can you let go off before you topple over? What happens if you adjust your feet to catch your fall? Can you balance yourself the way the dad balances his baby son? ... See more

Our 6-month old can't even stand on his own two feet. On flat ground. But put those two feet into the palm of his daddy's hands, and this kid is a gosh-darn ...