Real Madrid players are utilizing special masks during training sessions, sparking curiosity. The masks, overseen by performance manager Antonio Pintus, are designed to assess aerobic and anaerobic thresholds, providing insights into players' fitness levels. This technology allows the coaching staff to gauge players' VO2 max, fuel usage (fats vs. carbs), and overall conditioning.

The masks are used in short, high-intensity drills to gather data on player performance. This approach enables the team to monitor players' fitness during regular training, rather than relying on time-consuming tests. The data helps coaches tailor individual workloads, ensuring players are in peak condition for upcoming crucial matches in La Liga and the Champions League.

Sports physiotherapist Ben Warbuton explained that these masks reduce the risk of soft-tissue injuries. The gathered data allows staff to assess each player's condition and tailor workloads accordingly. The technology is expensive, explaining why it's not widely adopted. This is a strategic move to optimize performance.