A period normally lasts between two and seven days, with the average period length being five days. If your period lasts more than eight days and you are experiencing heavy bleeding, see a doctor. To ...

In January 2022, a study funded by the National Institutes of Health found that COVID-19 vaccination was associated with a “small, temporary increase in menstrual cycle length.” The study did not find ...

Most things in life are uncertain, but when it comes to your period, you can usually count on its friendly appearance once a month. What constitutes a 'normal' period is pretty subjective, but what ...

Two cicada broods are emerging in historic numbers in the U.S. after a very long nap. We'll learn about other creatures that go dormant as part of their normal life cycle. Two broods of cicadas are ...