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- 1Smartwatches less accurate at counting calories for people with higher body fat●The higher your body fat percentage, the less accurate your smartwatch is at measuring calories burned
New reporting highlights research showing that smartwatches become less reliable at estimating calories burned as a person's body fat percentage rises. The findings suggest wearable fitness devices may systematically miscalculate energy expenditure for users with more body fat, raising questions about how much trust people should place in calorie data when tracking diet and exercise goals.