The Heart Rate Zones section, found on the Progress tab, provides a detailed analysis of your training intensity. This feature helps you visualize how much time you've spent in each zone, allowing you to assess if your training aligns with your fitness goals, such as building an aerobic base or preparing for high-intensity efforts.
When you tap on the Heart Rate Zones card, you'll see a comprehensive chart that visualizes your effort distribution over time.

Directly below the main chart, the 4-Week Overview provides a statistical breakdown of your time in each heart rate zone over the last four weeks. For each zone, you can see:
Scroll down to find the Long-Term Overview, which offers a broader perspective on your training intensity.

Compare your short-term (4-week) and long-term (6-month) overviews. This can reveal if your recent training intensity has shifted, helping you confirm whether you're successfully following a specific training plan, such as polarized or pyramidal training.
The Heart Rate Zones analysis feature provides powerful visualizations to help you understand your training intensity. By examining your effort distribution across different time frames, from individual workouts to a six-month overview, you can ensure your training is balanced and effectively aligned with your fitness objectives.