Apple Watch Series 8 Can Track an Important Part of Women’s Health: Ovulation

Apple announced a new fertility tracking measurement Wednesday at its “Far Out” launch event. As it unveiled the Watch Series 8, the company said it’s adding temperature sensors to help people pinpoint ovulation, the time in someone’s menstrual cycle that makes pregnancy possible.

Your body temperature changes based on where you are in your menstrual cycle (when you’re not taking any birth control that stops you from ovulating, that is). Right before ovulation, your temperature usually dips to its lowest point. After ovulation, your temperature rises slightly. Two sensors are included in Watch Series 8, one close...