There are plenty of activity trackers on the market that measure things like steps, distance and more. But what about offering useful feedback for those gym sessions? That's what Push aims to do with its wearable. The gadget measures power and velocity in order to gauge just how well you're doing with bench press, squats and more during each rep. Those metrics are used to determine where intensity or weight could be increased, beaming the collected data to a companion app. From there, you can monitor progress, set goals and get recommendations for improving -- on top of sending your numbers to a coach or personal trainer. Push is also continually adding new exercises for the tracker to keep the stats collection as complete as possible. And athletes have already taken notice. Strength and conditioning coaches for the Dallas Stars, St. Louis Cardinals, East Tennessee State University and others have used the wearable to gauge weight room performance. After a successful crowdfunding campaign and nabbing 2,000 pre-orders, the Push band is on sale now for $189.