WHOOP Podcast How to Cross-Train with Ironman World Champion Lucy Charles-Barclay
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Aug 13, 2025 
Lucy Charles-Barclay, an Ironman World Champion and former elite swimmer, shares her journey from competitive swimming to triathlon stardom. She discusses balancing rigorous training for swim, bike, and run while managing celiac disease. Lucy reveals her effective recovery strategies, insights on nutrition, and how she uses WHOOP technology to monitor her performance. She also opens up about building a fitness community on YouTube and her excitement for upcoming competitions, emphasizing the importance of consistency and the mental aspects of elite training.
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Kona: Bridesmaid To Champion
- Lucy placed second at Kona four times before winning in 2023 with the fastest time ever.
- Her win felt especially rewarding after setbacks and an injury earlier that year.
Log Time And Keep Strength
- Track actual training time and use tools like WHOOP and TrainingPeaks to guide decisions.
- Include regular strength sessions (2–3 weekly) to support endurance performance and durability.
Target Weaknesses With Blocks
- Break training into targeted blocks and lift your weakest discipline while maintaining baselines in the others.
- Prioritize the bike in triathlon periods because bike strength reduces run fatigue on race day.