“Stress is really the body’s response to some type of a challenge,” explains Dr. Patrick DeLone, a clinical psychologist, “whether it’s a physical challenge, an emotional challenge, or a combination of both.” At its core, stress triggers the familiar “fight or flight” cascade: cortisol and adrenaline spikes that sharpen focus, speed up your heart, and prime your muscles. “In fifth grade you learned about fight and flight…your metabolism goes up, you can see better, you focus better”—all reasons why short‐term stress can actually enhance performance.