Today, I’m joined by Ulrich Dempfle, the innovative mind behind the CAROL Bike. Ulrich’s journey is fascinating—he started as a mechanical engineer in Europe, became a pioneer in hospital AI systems, and is now laser-focused on bringing cutting-edge fitness tech to regular people, like you and me. If you’ve been overwhelmed by all the talk about Zone 2 training—endless hours of slow, steady-state cardio being hailed as the “ultimate” longevity workout—this conversation is for you. We get into the realities of what Zone 2 actually does (and doesn’t do), why most people don’t realistically have time for four to eight hours of cycling or jogging every week, and, more importantly, what you can do instead that’s actually proven to boost your health.

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