Apple Watch Series 8 features advanced health sensors and apps, so you can take an ECG,¹ measure heart rate and blood oxygen,² and track temperature changes³ for advanced insights into your menstrual cycle.⁴ And with Crash Detection, sleep stages tracking, and advanced workout metrics, it helps you stay active, healthy, safe, and connected. ACTIVITY Track all the ways you move. Made to help you move. Made for movement. Stay active with customizable workouts and more advanced views. Close…