He brings up the vagus nerve, and rapid heartbeat. Just some of it. Takes about a minute to do it.
Search it more. Auriculotherapy This came up in the search also Auriculot

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Did you know that a simple technique like shaking your ears can help stimulate your parasympathetic nervous system? In this video, we dive into how this practice activates the auricular branch of the vagus nerve, located near the ear and jaw. This powerful connection can help your body restore balance and healing, promoting relaxation and calming the nervous system.

Shaking your ears can have a profound effect on several areas of your health, including reducing stress and anxiety, improving sleep quality, aiding digestion, lowering blood pressure, and even offering relief from conditions like tinnitus and vertigo. By stimulating the vagus nerve, this technique enhances the body’s ability to heal itself, bringing a sense of calm and well-being.