Heart of the Champion.

Summary

Zhou Yi, a youth player, is training with Dortmund's youth team, where he previously impressed with his performance. His coach, Ecker, emphasizes the need for stamina training, overseen by fitness coach Oliver Bartlett. Bartlett explains that fitness in football is not just about endurance but also about the ability to recover quickly from high-intensity actions. He highlights the importance of understanding muscle fiber types—fast-twitch for anaerobic actions and slow-twitch for aerobic endurance. Zhou Yi realizes that improving his physical ability requires targeted training based on his muscle fiber distribution, rather than just long-distance running.

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