Boundless Life The Truth About Zone 2 Cardio, Mitochondrial Health & How REHIT Beats It (In Less Time!) With Ulrich Dempfle
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Apr 24, 2025 
In this engaging discussion, Ulrich Dempfle, CEO and co-founder of Carol, shares insights on optimal cardiovascular training. He demystifies Zone 2 cardio, explaining how it balances intensity and duration for fat loss and metabolic health. Ulrich highlights the advantages of high-intensity REHIT, showcasing its potential to improve VO2 max even in non-responders. He also emphasizes the importance of personalized training and nutrition's critical role in weight loss, all while making cardio accessible for busy lifestyles. Perfect for fitness enthusiasts!
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Zone 2 Training Defined
- Zone 2 training involves exercising at moderate intensity where you can speak but conversation becomes uncomfortable.
- It's aimed at maximizing fat oxidation and improving mitochondrial density through longer sessions.
Zone 2 Training Volume Challenge
- Zone 2 training sessions commonly last 60 to 90 minutes and are done multiple times a week.
- This volume is hard to fit for most people due to common lack of time for exercise.
Pro Athletes' Training Strategy
- Pro athletes use an 80-20 training split with mostly Zone 2 due to high weekly volume needs.
- This approach is not necessarily optimal or practical for non-professionals with limited training time.
