I have been tracking my treadmill and gym workouts using my TomTom Spark watch. When I log into the app on my phone, on the main screen under the summary it states I have burned 820 kcal so far today. When I go under my activities and click on my treadmill workout it says 3,120 kcal under the workout summary. This does not make sense to me. Can someone please explain? I also sync these workouts with myfitnesspal and that is pulling in the 3120 kcal as well. When I look at this workout on my watch it states that I burned 38 cal (which also doesn't make sense).