Menstrual Cycle Tracking

The study frames menstrual monitoring as reproductive control and calls for more research into its relationship with covert contraceptive use and IPV. Oura is described as having validated menstrual cycle visibility and ovulation timing detection. Hormonal variation across the menstrual cycle affects readiness, sleep, and recovery. Partners tracked periods to detect pregnancy status and infer contraceptive use. Nightly temperature trends can reflect menstrual cycle phases and ovulation. Partner monitoring of menstrual cycles created a vulnerability for girls using contraception covertly. Girls using contraception covertly also had to lie about or conceal menstrual bleeding. Cycle phase information can help female athletes adapt training choices to hormonal state.