What is an exercise event?

An exercise event is automatically detected when your heart rate has been elevated to a moderate and/or vigorous intensity for 10 minutes or more. 

The exercise event can also include light activity, but you need to have entered at least a moderate intensity for the event to be classified as exercise. This is because entering into moderate or vigorous activity is the only way to improve your fitness level. If you stop exercising or take a break for more than 150 seconds, your exercise event is stopped. This could result in your exercise event not being long enough to display in the app.