Whoop 4.0 Activity Tracker With 12 Month Subscription ($199, originally $239)
A screen-free fitness tracker, Whoop is uniquely focused on recovery. It continuously monitors your heart rate, respiratory rate, resting heart rate, heart-rate variability, skin temperature, blood oxygen levels, daily activity, and sleep to give you a “strain” score that represents the physical and mental demands you’re putting on your body. See that and so much more data in the Whoop app, where you can also get workouts, log wellness behaviors, connect with community members, and track exercises, reps, and weight usage.
For more, read a POPSUGAR editor’s review of the Whoop 3.0.