which technology keeps track of heart rate during a workout?
what it means and where on apple watch you ll find it learn how apple watch measures your heart rate and get tips for a more accurate reading you can check your heart rate any time using the heart rate glance and when you re using the workout app apple watch measures your heart rate continuously during the workout this information as well as other data it collects helps apple watch estimate how many calories you ve burned in addition apple watch measures your heart rate throughout the day when you re still