The training status feature depends on updated assessments of your fitness level, including at least two VO2 max. measurements per week. Your VO2 max. estimate is updated after outdoor runs during which your heart rate reached at least 70% of your maximum heart rate for several minutes. Indoor run activities do not generate a VO2 max. estimate in order to preserve the accuracy of your fitness level trend. You can disable VO2 max. recording for trail run activities if you do not want this run type to affect your VO2 max. estimate (Turning Off VO2 Max. Recording).

To get the most out of the training status feature, you can try these tips.