Does Apple Watch track Exercise by heart rate? By default, your Apple Watch monitors your heart rate for the Heart Rate app, workouts, and Breath and Reflect sessions. If you’ve turned off heart rate data, your can turn it back on. Open the Settings app on your Apple Watch.
What counts as Exercise on Apple Watch? Your Apple Watch should count Exercise minutes from anything over and including a brisk walk. Every minute you spend performing an activity of this intensity counts toward filling your Exercise ring.