You shouldn't exercise during your period.

Exercise can actually help relieve cramps and improve mood during menstruation.

You can't swim or bathe during your period.

You can swim and bathe during your period, although some people may prefer to use menstrual products designed for water activities.

You can't get pregnant during your period.

It's possible to get pregnant during your period, especially if you have a shorter menstrual cycle.

You can't have sex during your period.

You can have sex during your period, although some people may prefer not to.

You can "hold in" your period by not using tampons or pads.

Menstrual blood will continue to flow regardless of whether or not you use menstrual products.

The menstrual cycle is always 28 days long.

The menstrual cycle can vary in length from person to person and cycle to cycle.