What happens to your THRZ over time if you have a regular workout program?

Answer 1

If you maintain a regular workout program, your training heart rate zone (THRZ) may shift over time as your cardiovascular fitness improves. Initially, you may find your THRZ higher due to lower fitness levels, but as you become more conditioned, your heart becomes more efficient, allowing you to perform at higher intensities with a lower heart rate. Consequently, your THRZ can expand, enabling you to train at higher intensities or for longer durations while still staying within the desired heart rate range. Regular monitoring and adjustments are essential to ensure continued progress.