Wearable activity trackers will slowly become more and more advanced. There will be added sensors, more sophisticated readings, and overall more accurate information. While improvements have moved at a snail’s pace, the UP3 from Jawbone marks a nice leap forward. It’s smart enough to know what you’re up to, from hitting the hardwood to going for a jog, and it uses bioimpedance sensors along with ambient temperature readings to give you an accurate idea of how many calories you’ve burned and just how active you’ve been. UP3 is also able to track the three different stages of sleep, last a week on one charge, and it’s even water-resistant for those workouts that happen in the pool. Want a health tracker that can also respond to texts? Get a smartwatch. Want one that really gives you an idea of your overall health? Get the Jawbone UP3.