Zone 2 cardio, characterized by low-intensity exercise, boosts endurance and overall fitness by enhancing aerobic capacity and fat metabolism. Maintaining a heart rate of 60-70% of maximum, Zone 2 training helps build a foundation for faster, more intense workouts without causing overtraining or injury. It’s particularly effective for athletes and beginners alike, allowing for better long-term stamina and performance improvements.
https://www.businessinsider.com/what-is-zone-2-cardio-exercise-training-benefits-2023-10