Lessen your stress The on-wrist EDA Scan app detects electrodermal activity, which may indicate your body's response to stress. You can use the Fitbit app to track trends over time, reflect on your mood and try new mindfulness tools. Understanding stress is clearer with your daily Stress Management Score , which comes with a helpful breakdown for Premium members. For the muscle that moves you Use the on-wrist ECG app to assess your heart for atrial fibrillation (AFib), a common heart rhythm irregularity. Plus, stay informed with heart rate notifications when Sense detects that your heart rate is above or below your threshold. Take health to the next degree Skin temperature tells a story about your body. Sense has an on-wrist skin temperature sensor to track your variation each night and show if it varies from your usual range, so you can identify changes in your trends over time. A new way to see wellness Track SpO2-the level of oxygen in your blood-to help you learn when there may be an indication of important changes in your well-being . See your nightly average and range at a glance with an SpO2 clock face or your weekly levels in the Today dashboard on your wrist. With Premium, you can even interpret monthly trends in your Health Metrics dashboard. 6 months of health insights Sense unlocks a free 6-month trial for new Premium users so you can optimise your well-being: see your SpO2 breathing rate and heart rate variability trends over the past month in the Health Metrics dashboard , plus advanced mindfulness and stress management tools deeper sleep analysis personalised insights and more.