What Is Zone 2 Cardio? The Tour de France Fitness Secret Explained

Zone 2 cardio, once the exclusive domain of elite cyclists like those in the Tour de France, has surged in popularity among general fitness enthusiasts, thanks to its promotion on wellness platforms and social media. This type of low-intensity, steady-state cardio is now hailed as a key to longevity and improved heart health, especially following a major scientific review in 2025. The implications are huge, suggesting that this form of exercise could revolutionize how people approach fitness and wellness, emphasizing long-term health benefits over high-intensity workouts.