I know no device is perfect or accurate when it comes to calorie burn. But anytime I record a hot power yoga class as a yoga activity, it is dramatically incorrect. As you can see, I spent almost 30 mins in zone 4 and rest of the time between zone 2-3 for heart rate. There is no way that it can say i only burned 67 calories.

For comparison, this same class on my garmin said my active calories burned was 344 for a total of 418.

Again, i know no device is doing this well. But this one just seems dramatically off. I’m assuming the algorithm is just seeing “yoga” as a gentle, stretching activity and not doing any actually calculations based on my heart rate.