Monthly period schedules now: exactly how monthly period cycles are different because of the ages, pounds, battle, and you will ethnicity ” data-large-file=”” src=”” alt=”Women which have phases of moonlight expense and differing system icons circling her.” width=”700″ height=”304″ srcset=” 1024w, 300w, 150w, 768w, 500w, 1214w” sizes=”(max-width: 700px) 100vw, 700px” /> Brand new Fruit Ladies’ Fitness Study examines how decades, pounds, race, and you will ethnicity apply to menstrual schedules.