The menstruation cycle is normally for about 28 days, but it is considered normal if it lasts between 21 and 35 days. The menstruation is the part of the menstruation cycle in which the bleeding is produced and usually lasts between 3 and 7 days. The quantity of menstrual flow that is lost per period changes a lot depending on the woman, going from only 9g to more than 350g. The average amount, however, is of about 70-80g, which approximately equals the volume of a cup of tea.
The amount of flow also varies depending on the day, with the higher amount at the beginning of the period than at the end. Actually, 90% of the flow is emitted during the first 3 days of menstruation.
Socially, the menstruation is still the part of the hormonal feminine cycle which is more looked down on, even as if it was like an indisposition or a transitory illness; however, each day that goes by there is more people who want to focus the process from an integral conception and understand the changes of the feminine body as a bond to nature, an opportunity to reach the knowledge of the own psychic, physical and emotional functioning.