[header] How to be ready for your first period [title] Understand menstruation. [step] Spend some time familiarizing yourself with the bodily processes behind menstruation. Many women feel more comfortable with their first period if they understand why menstruation occurs. 
[substeps] Your menstrual cycle is a bodily process that begins in puberty, when you reach sexual maturity. Each month, your body prepares you for possible pregnancy.