In addition to daily movement and sleep, the Google Health app tracks a host of exercises, from running to swimming, and yoga to kayaking. During my time with the Fitbit Air, I have compared its results to the Oura Ring 4, the Whoop MG, and the Samsung Galaxy Watch 8. For the most part, the Fitbit Air, Oura Ring, and Whoop all agree on the average heart rate during a workout, but the Fitbit Air does overestimate calorie burn compared to them. During sleep, it also mostly aligns, but is often harsher with its overall sleep score compared to the Oura Ring. However, it’s during sleep that I’ve se