Exercise is important, but full health tracking is much more complex. Apple Watch Series 8 has a new temperature sensor that works while you sleep. Cycle Tracking can use that data to estimate ovulation dates - combined with heart rate and cycle data, it gives you a detailed view of your menstrual cycle. It will even let you know if there s possible cycle deviations, like irregular periods. And all your data is safely stored and encrypted, right on your phone. The Apple Watch is as beautiful as ever with an Always-On display, and it s tough enough thanks to crack, dust and water resistance. This hardy buddy can even help you out in a road accident with Crash Detection. It can alert emergency services and your emergency contacts - of course, let s hope you never need that feature! See how you re sleeping with the Sleep app - it tracks how much time you spend in REM, Core or Deep sleep Take an ECG whenever you want, or measure blood oxygen right from your Watch Fall Detection is optimise...