Track your period for accurate cycle length, period prediction, and fertile window knowledge. Your menstrual cycle is the monthly process your body goes through to prepare for pregnancy. It begins on ...

When investing, especially in stocks, your returns can fluctuate wildly from year to year. For this reason, knowing an asset's return for a single year isn't too helpful when deciding whether or not ...

Menstruation is a result of puberty. This is when your body becomes capable of reproduction. When your menstrual cycle begins, your estrogen levels increase. That causes the lining of your uterus to ...