Hi! I was told that the Venu is not compatible to do a HIIT workout and to instead use the cardio activity if doing a HIIT workout. I did that and the calories burned for an entire intense HIIT workout (~50 minutes) seemed pretty off, only measuring 360 calories. Has anyone else had any issues with the Venu miscalculating calories burned for a HIIT workout (using cardio activity) or any other activity in general? How accurate is the calorie count measurement in the Venu?