When profound stress hits, the body can react with terrifying intensity: a racing heart, chest pain, dizziness, shaking, shortness of breath, and the very real belief that something is medically wrong.
In this lesson of Becoming: An Evidence-Based Guide to Being Human, we examine why psychological distress can feel so overwhelmingly physical. We explore the autonomic nervous system, adrenaline, interoception, the brain’s interpretation of bodily signals, hyperventilation, and the science behind why a stress response can resemble a medical emergency.
Along the way, we meet researchers including Eduardo Benarroch, Walter Cannon, Robert Sapolsky, A. D. “Bud” Craig, Lisa Feldman Barrett, and David Clark, whose work helps explain a frightening question:
Why did I genuinely believe I was dying?
This lesson also begins the transition into the next chapter of the curriculum: what happens when the emergency ends, but the stress response does not. In Lesson 5, I’ll take you into the research that eventually became my graduate thesis on prolonged psychological stress and executive functioning.