A technique for handling stress responses that are run by the autonomic nervous system — blushing, sweating, jittery hands — and therefore can't be willed away; telling yourself to stop makes it worse. The fix is to name the feeling out loud in a self-loving way (e.g., "I'm so nervous") rather than silently fighting it.
The claimed mechanism is specific: it isn't the nervousness itself that perpetuates the jitteriness, sweating, or redness — it's the silent self-criticism about being nervous. Verbalizing signals to the body that its discomfort has been heard, which breaks that self-criticism loop (and, per the source, tends to get a laugh, which further diffuses the tension). This is close in spirit to Emotional Discipline as Self-Leadership (Trust Foundation) and Confidence as Survivability ("I Will Be Okay") but targets a narrower, more mechanical failure mode — a specific autonomic-nervous-system feedback loop rather than general composure under pressure.
One of four habits (with Reveal Your Vitals (Open Posture as Threat-Response Reset), Eye Contact as an Emphasis Tool, Not a Constant Stare, and Explore What Feels Good (Comfort-Zone Framing)) presented together as sufficient for top-tier body-language communication.