Zone 2 Vs. Zone 3 Training: Which Heart Rate Zone Builds Better Endurance?
Zone 2 vs zone 3 training is one of the most debated topics among endurance athletes. Polarized training advocates push for strict zone 2 adherence, while emerging research shows zone 3 delivers comparable cardiovascular benefits, particularly for athletes with limited weekly training time. This article breaks down the physiological differences between these intensities, explains why … Read more