The XX Rules: science for women.
You’ve done the work. The clean eating, the supplements, the tracking apps, the mindset shifts. And still, you’re not enjoying your life or feeling better. You’re exhausted, foggy, short-fused, and feel alone in your struggles. You’ve been told it’s normal. You’ve been told to push through. But deep down, you know: your body is speaking. It’s just that no one ever taught you the language to understand what it is telling you.
The XX Rules are your translation guide.
The truth? Your energy, mood, and performance aren’t random—they’re rhythmic. And they’ve been misread because the science you’ve been given was built for men, not for you. Most studies driving your fitness plans, productivity hacks, and even your prescriptions are conducted on male bodies or on women only during the least hormonally active part of their cycle. You’re not unstable. You’re unrepresented.
The Period Brain
The New Science of Why We PMS and How to Fix It
This is your Brain on Birth Control
How the Pill Changes Everything
Sarah E. Hill, PhD
Psychologist advancing the science of women. Because you’re a woman, not a smaller man.
Dr. Sarah E. Hill is an award-winning research psychologist with 100+ research publications and two books to her name. Dr. Hill’s groundbreaking research has been featured in The New York Times, The Washington Post, Scientific American, The Economist, and on television shows like Good Morning and The Today Show. Dr. Hill is a thought-leader in the area of women’s hormones and is a sought-after speaker, consultant, and media expert who translates the science of women’s biology into practical frameworks for living, leading, and thriving. In addition to running her research lab in the psychology department at TCU, Dr. Hill serves on the scientific advisory boards for women’s health companies like 28 Wellness and Flo Health.
Dr. Hill’s research laboratory is located in the Department of Psychology at TCU in Fort Worth, Texas.
As seen on
Appearances
Can birth control pills influence the female brain?
Women’s Wellness DisruptHERS
Would You Love the Same Man On and Off the Pill? | Dr. Sarah Hill | EP 403
Jordan B. Peterson Podcast
Women Health Expert: Birth Control Changes Who You Are & How You Feel About Your Partner!
The Diary of a CEO Podcast
