Similarly, insulin resistance tracking follows a trend across the month rather than delivering a single number. Google frames both as wellness tools rather than medical ones, so neither replaces a dedicated monitor. Both sit alongside existing health-tracking features the smartwatch already handles, including atrial fibrillation detection, stress tracking, heart rate and SpO2 monitoring, and breathing rate monitoring. Once you start a workout, the watch offers audio and visual cues for every set and rest period and lets you adjust reps or weight mid-session. A new Key Metrics view analyzes your performance afterward and tracks how close you are to your next personal best.