[https://psychotechnology.substack.com/p/meditation-as-wakeful-relaxation]

Vasocomputation’s basic thesis is “vascular clenches stabilize neural patterns” — patterns of muscle tension will set certain aspects of phenomenology as constants and others as variables. I.e. every stance has a certain internal feeling that defines the stance and as long as you hold this feeling, you “hold frame” — if you lose the feeling (i.e. if this core pattern of stabilizing tension shifts), you break frame.