What example training load does the speaker say can lead to immune system breakdown?

Aaron Hartman, MDFunctional Medicine Specialist | Clinical Researcher

The Science of Stress | The Hidden Dangers of Overtraining_ Immune System Breakdown

21 Feb 2025 · 1 min

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Aaron Hartman, MD (speaker) discusses how prolonged high-volume exercise (example: training 2.5–3 hours/day plus running ~4 miles five days/week for 2–3 months) can cause immune system breakdown. He links physiological stress from overtraining to increased infection risk and frames this as a likely reason some patients fail to improve despite multiple interventions (gut work, hormone treatments, mold remediation, mast cell therapies, salts, and treatments for dysautonomia/POTS and brain fog).

Questions this video answers

Training two and a half to three hours per day and running four miles five days a week for two to three months.

Chapters

When you train two and a half to three hours a day and then go run four miles and do that five days a week for, you know, two, three months straight. @ the end of that, some people, their immune systems break down. And so the idea that stress can increase your risk for infections, affect your immune system function, all these other things, I mean, that's. For me, that becomes a selling point to convince people, like, you're not healing. We've done all this cool stuff, worked on your gut, we worked on your hormones, we've got the mold out of the building, we've given you mast cell stuff, we're giving your salts and your stuff, your dysautonomia, your pots and whatever else is going on with your brain fog, whatever, and you're just not getting better symptomatically.