Millions of people track their cycles on apps because it's a convenient way to know when your next period is likely coming. But those apps are also tracking your data, sometimes in ways that are not legal or consensual. And they don't go deep enough. What's worse, they're also leaving users vulnerable to surprisingly inaccurate fertility predictions, with some studies estimating efficacy at about twenty percent for correctly predicting ovulation.

Written by a midwife and a clinical sex therapist, The Cycle Book is the solution. It's the customizable book they dreamed up because they needed it so desperately—for their patients, for their friends, for themselves. Complete with journal prompts and a full year's worth of beautiful, simple-to-use cycle tracking forms, this is daily charting made easy. Cycle tracking can even be the missing link to getting a chronic illness diagnosis or the final piece of the puzzle in understanding your mental health.

Menstruation is vastly understudied and has not been given its due by science and culture. We've been done wrong! Now, there's a better way. The powerful tool of tracking is so valuable that everyone can learn from it. The Cycle Book is an education. You decide what to track, and Laura and Morgan will help you step-by-step as you take back control over your cycles—and your life.