Two studies found menstruation and sleep patterns synchronized with moon phase cycles.
Menstrual Cycles Intermittently Sync with Moon Cycles: Study
Reflections on current trends in maternity care: a stream of consciousness
Sex and Menstrual Phase Influences on Sleep and Memory
How Sleep Works: Understanding the Science of Sleep
Rate of postoperative complications in % on each day of the lunar
Moon Cycles Exert an Influence on Menstruation and Sleep Patterns
The Power of Your Moon Cycle + Practice — Speyeral Beauty
Can the Moon affect our health and behaviour?
The Moon-Body Effect: How the Lunar Cycle May Affect Your Health