Cortisol: the Overachiever You Didn’t Hire

As a therapist, I spend a lot of time explaining to very smart, very capable humans why their bodies are acting like there’s a bear in the room when the only threat is an unread email. Enter cortisol—our favorite stress hormone and the valedictorian of “trying too hard.”

Cortisol isn’t the villain of the story. In fact, evolution loves cortisol. It wakes us up in the morning, helps regulate blood sugar, and gives us a quick boost when we need to act fast. The problem isn’t cortisol itself—it’s the surge, especially when that surge is responding to memory rather than danger.

From a neuroscience perspective (and yes, I will keep this friendly), cortisol surges are often triggered when the brain’s threat-detection system—hello, amygdala—decides something feels familiar in a bad way. Trauma, chronic stress, and unresolved experiences teach the nervous system to stay vigilant. The body remembers even when the mind says, “I know I’m safe.” Bodies are polite like that. They don’t interrupt. They just flood.

So you might notice cortisol spikes when:

• You’re criticized (even gently)
• You rest (rude, I know)
• You smell something that reminds you of a time you’d rather forget
• You’re doing nothing wrong at all

Academically speaking, this is a classic case of state-dependent memory and maladaptive neural storage. Practically speaking, it feels like your heart is racing and your thoughts have left the building.

This is where EMDR therapy shines.

EMDR doesn’t argue with cortisol. We don’t say, “Calm down, you’re fine,” because honestly, the nervous system does not care about logic during a surge. Instead, EMDR helps the brain reprocess stored memories so they can move from “current threat” to “completed experience.” When that happens, cortisol learns it can clock out early.

Over time, clients often notice fewer surges, shorter recoveries, and a growing sense that their body is finally on the same page as their intellect. (A beautiful reunion.)

So if your cortisol is acting like an unpaid intern who’s taken over the office, know this: your body is not broken. It’s adaptive, intelligent, and responding to something that once mattered deeply. With the right support, it can learn that the bear has, in fact, left the building.

And that email? Still annoying. Just not life-threatening.