You’ve recently gotten back into exercising and you’re already reaching your weekly step count. Yet your resting heart rate is through the roof. Enough sleep? You’re barely a blip on the leaderboard. The new Fitbit Alta HR is a slim heart-rate wristband (no cumbersome chest straps required) that measures calorie burn, quality of sleep, cardiovascular health and lets you compare yourself to people of the same age and gender. By tracking this type of data, the wristband can provide you with a more accurate and more complete picture of your health. Use it to aim for such improvements as eating healthier, losing weight and sleeping more soundly. Then get moving and monitoring. The wristband turns complex data into meaningful insights on your performance and motivates you to keep on track.