Today we will show an infographic to make it easier to understand this complexity that is the human body during the three phases of the menstrual cycle – menstrual phase, proliferative phase and secretory phase – which lasts, on average, 28 days, some typical symptoms of some phases, such as differences in mood and why this happens, and in which phase the much-feared PMS occurs. See below (click on it to see it in a larger size):