I have asked this question to support a number of times and failed to get an adequate response. The calories burned estimate in Health Mate is a mess. I had a 33 minute high intensity interval training workout where my heart rate averaged 146 beats per minute that was estimated to burn 154 kcal. Immediately following I did a 30 minute yoga session where my heart rate averaged 123 bpm that was estimated to burn 159 kcal. I need to stress, it was a restorative yoga session, designed to recover from a hard workout, with my heart rate steadily declining. How can an easy 30 minute yoga session burn more calories than a very hard 33 minute interval training session?
My best guess is that because the two workouts were back to back, the yoga session earns some kind of calorie bonus because it happened after I had already been exercising for some time. My first question is, am I correct in this assumption?
My second and more important question: I was told that the calories burned estimate depends on only two factors, the duration of the exercise and the category you choose for it (e.g. "fitness" and "yoga" in my case). Is this true? If so, it makes absolutely no sense to have a watch that has continuous heart rate monitoring and does not use heart rate data to estimate the calories burned. In the example above, a quick glance at the heart rate data makes it clear why I am so skeptical the yoga session somehow burned more calories than the interval training. Please make heart rate data the primary determinant of the calories burned estimate!