The Truth About Cortisol & High-Intensity Training
Most of us know cortisol as the “stress hormone” — and we’ve heard the horror stories about what too much can do to our bodies.
But here’s the thing: not everything you’ve heard about cortisol is true.
The Myth
Many women believe they should avoid high-intensity training as they age because it spikes cortisol and adds to their “already stressed” state.
The Reality
Dr. Stacy Sims says that’s simply not true.
Cortisol’s job is to mobilize the resources your body needs to handle stress — whether that’s an illness, a bad day at work, or a tough workout.
The real danger comes from chronic stress (think: ongoing anxiety or lack of recovery), which is linked to diseases like cardiovascular issues, metabolic syndrome, and diabetes.
Why HIIT Can Help
Yes, high-intensity exercise raises cortisol — but so does all exercise.
Here’s the difference: HIIT makes you more stress resilient. Over time, it actually helps reduce your baseline cortisol levels and makes your body better equipped to handle life’s curveballs.
Or as Dr. Sims puts it:
“Exercise is not the enemy here; and when done well, it’s really the hero of this story.”
The Empower Approach
We don’t just give you HIIT and send you on your way.
Our programs blend:
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Strength training
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Sprint intervals
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Conditioning
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Breath work & pelvic floor training
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Plyometrics for power and bone health
It’s a full, balanced program designed by women, for women — to keep you fit, strong, and stress-resilient for life.
