Rob AndersonLead Coach/ Principle Owner, Stand Sure Coaching · Spending time in collaborative conversations with clients

Your Brain's Stress Loop: Why Small Things Feel HUGE! #shorts

17 Mar 2026 · 1 min

Watch on YouTube

0:46

In this YouTube short, the speaker explains why minor stressors can feel overwhelming. He describes how the brain repeatedly replays stressful moments—like a brief meeting with a boss—throughout the evening, a process known as rumination. This mental replay triggers the "preservation response," a physiological stress reaction that keeps heart rate and cortisol elevated even after the original stressor has passed. The key point is that the body reacts not to the actual event but to the ongoing story the mind tells itself, prolonging the feeling of stress.

Chapters

That's why small things can feel huge. When the boss says, hey, swing by my office, I want to talk to you real quick, but it's the end of the day and your boss has already left, your brain keeps replaying that all evening. And there's another fascinating piece of psychology that's part of that. It's called the preservation response. Scientists have found that when people continuously replay the stressful thoughts, the body keeps producing the stress responses. Like elevating the heart rate, elevating the cortisol, even when the stressful event is over, so the body doesn't just react to reality. It reacts to the story that the mind keeps telling itself.