Andrew Irwin, MD

I'm an internal medicine physician and Certified Strength and Conditioning Specialist with two decades of serious training behind me — Ironman triathlons, marathons, Hyrox competitions, rugby, and competitive hockey.

Clinical medicine and serious athletic training are two worlds that rarely inform each other the way they should. I've spent my career living in both — and what I've found is that each has something the other needs.

Medicine was built to treat disease. It was not built to optimize the people who don't have it yet. The metrics that actually predict how well you age — VO2 max, muscle mass, insulin sensitivity, functional strength — are rarely discussed in a clinical setting. The training principles that build those metrics are rarely discussed in medical school.

That gap is what I write about.

I've delivered medicine in remote Himalayan villages with no internet and no backup. I've admitted patients whose bodies weren't strong enough to tolerate life-sustaining treatments. I've watched this trajectory play out more times than I'd like — athletic in youth, busy in middle age, debilitated by 60.

It doesn't have to go that way.