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.

A 28-day wearable-sensor study of 26 healthy naturally menstruating women found that active energy expenditure varied across the menstrual cycle and was higher in the early follicular phase than the ...

Women everywhere are syncing workouts to their cycle- but has the trend raced ahead of the research? Here's what we know.

Cycle syncing has moved from wellness blogs to mainstream conversation, fueled by a femtech industry valued at $66.2 billion ...

A study of 1,474 Clue app users found that women vaccinated against COVID-19 during the follicular phase had higher odds of ...

Your cycle already knows when you should work harder eat more and rest. Here are your biggest questions finally answered.

Add Yahoo as a preferred source to see more of our stories on Google. Luckily, I’m here to fill you in. And I promise I’ll make it way more interesting than your middle school health teacher did. I ...

Millions of women are syncing their routines to their cycle. Here's what the research actually says about whether it works.

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 ...