How accurate is the calorie count on your smartwatch? Florida International University researchers tested Apple, Garmin, Samsung, and Fitbit smartwatches against laboratory measurements of calories burned during exercise. The study found that smartwatch calorie estimates can be substantially inaccurate — and the error increased with higher body fat percentage. Watch how FIU researchers tested the devices and what the findings could mean for people who rely on fitness trackers to measure calories burned during workouts. #Smartwatch #FitnessTracker #CaloriesBurned #FIU #HealthResearch