Get empowered to make a change and embrace your weight and fitness goals with activity and sleep tracking calories burned & more on easy-to-use Fitbit Inspire and Fitbit Inspire HR. 24/7 Heart Rate 24/7 heart rate helps you maximise your exercise sessions understand heart rate zones see advanced sleep stages and better track calorie burn. Resting Heart Rate Wear Fitbit Inspire HR all day and night to record your resting heart rate and track heart rate over time. Heart Rate Zones Recognise your Fat Burn Cardio and Peak heart rate zones to optimise each of your workouts with just the right amount of effort. Cardio Fitness Level Use Inspire HR with your Fitbit app to get your Cardio Fitness Scorea snapshot of how fit you areplus tips to improve.