You’ve heard of the four stages of the menstrual cycle—menstrual, follicular, ovulation, luteal—but, truth be told, it’s been years since you took a sex-ed class and you could use a refresher course.

Medically reviewed by Laura Young Energy levels may increase during the follicular phase due to rising estrogen.Increased ...

Sexual reproduction keeps many species alive. In humans, male and female reproductive systems look very different, though. The female reproductive system has many unique parts, including the ovaries, ...

Editor's Note: We at PS recognize that people of many genders and identities have menstrual cycles. This particular story includes language from experts who generally refer to people with menstrual ...

Please provide your email address to receive an email when new articles are posted on . Women who received COVID-19 vaccination in the follicular phase had longer menstrual cycles vs. before ...

Throughout the follicular phase, a single "dominant follicle" develops faster than the rest. This follicle (a fluid-filled sac in your ovary) then releases more estrogen into the body in preparation ...