Why do people have cramps?

Cramps come from the uterus – which is a muscle – working / squeezing / contracting to help push out the menstrual period.

Have a question? Ask a Period Pro:

The Period Education Project does not provide personal medical advice but will answer general questions on topics related to menstrual and reproductive health. All information is for educational purposes only. For specific medical advice, diagnosis or treatment, consult your health care provider.
Including your email is not required. But if you include it, we'll let you know when your question has been answered!