I understand your question from a sensory standpoint, to me it was the removal of my wisdom teeth. The anesthesia. Gradually losing agency over my mind and body, and an inescapable physical force pressing down on my forehead. It felt like dying, for a few seconds. I knew the context, yet my instincts kicked in and told me, “you’re dying”. I remember fighting,… trying to get up straight but being held down by this merciless force. I’ve never felt this vulnerable. Mortal.