Most of us think we understand our menstrual cycles. We track them with apps. We count the days. Maybe we even know when we’re ovulating. But what if everything you think you know is either oversimplified—or totally wrong? And what if the tools you're using to "know your body" are collecting your most intimate data... and selling it? In this episode, Jo talks with Laura Federico and Morgan Miller, authors of The Cycle Book, about the real science behind your cycle—and the avalanche of misinformation being spread by influencers who have no business talking about hormones. From raw meat diets to cycle syncing with moon phases, social media is full of bold claims and bad advice. This conversation cuts through the noise. You’ll learn: Why most period tracking apps are wildly inaccurate (and legally allowed to sell your data) What the follicular and luteal phases actually mean for your mood, energy, and well-being How to identify hormonal patterns that impact everything from sex to chronic illness Why pen-and-paper tracking might be the most powerful (and private) health tool you’ve never tried This isn’t about becoming a hormone expert. It’s about getting real information, trusting your own body, and unlearning the junk we’ve all absorbed from magazines, apps, and wellness influencers. Find The Cycle Book here. Join our newsletter community here. Pre-order EVERYONE IS LYING TO YOU here. Visit our lovely sponsors here. Learn more about your ad choices. Visit podcastchoices.com/adchoices