Do what you love and feel your best. Active Zone Minutes tracks time spent in target heart rate zones. Know when you're in fat burn cardio or peak zones so you can adjust your effort to match your goals. Get daily scores to help manage stress. Stress Management Score and guided breathing sessions can teach you healthier ways to handle stress. Track your sleep metrics for better sleep. Better energy starts with better rest. Track your Sleep Score light deep and REM sleep sleeping heart rate and see how consistent your schedule is. Keep an eye on your well-being. The Fitbit app is like a control panel for your body. By watching for changes in your resting heart rate blood oxygen skin temperature & more you can get to know your body and do whats best for it. Light as air. That's how it feels to wear this slim smooth silicone band…