Menstruation
Menstruation, or your period, is the shedding of the uterine lining at the start of the cycle, typically lasting 3 to 7 days.
It happens when no pregnancy occurs and progesterone drops, signaling the lining to shed.
Period length and flow vary from person to person and can shift with age, stress, and health.
Sync your whole cycle, automatically
PhaseBloom builds your meals, workouts, and skincare around your exact cycle phase, day by day.