Hi, I recently did a couple of long car and train rides, about 6 hours each, and realized how my calorie count went slowly high and higher, throughout the ride. This also happened, after I reset the watch twice. Anybody else recognizing this behavior? In a car I could imagine that the amplified stress level on a highway could raise the heart rate to a point where the watch thinks I'm burning calories, but sitting on a train? Or is the accelerometer somehow being thrown off by the movement?