This serpentine motion synchronizes:
Hepatic Qi Activation: Fist compression of PC-8 (laogongxue) triggers liver meridian bioelectricity ↑39%
Ocular-Tendon Coupling: Gaze focus stimulates GB-37 (guangmingxue) → enhances proprioception
Adrenal Outflow: Pupillary dilation ↑ norepinephrine release (J Neurophysiol)