1) A 2011 study found that 28.3% of 826 women began their period near the new moon. This was a notably larger majority than any other start time. 2) Bright ,cranberry red period blood is a sign of a healthy regular period. Period blood that is pink in color may indicate low estrogen level which may in turn affect the regularity of period. 3)Period blood can be dark brown if the uterine lining and blood is older which is completely normal. 4)The average amount of blood loss during a period can range from a few tablespoons to a cup of blood. 5)Research shoes that bra fit is related to menstrual cycle stages and is especially influenced by hormonal changes or ones reproductive stages. 6)In 1946 cartoon produced by Disney in collaboration with Kotex illustrates "the story of menstruation" of 10 minute.