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In the FLO: Unlock Your Hormonal Advantage and Revolutionize Your Life Kindle Edition
From the bestselling author of WomanCode comes a life-changing biohacking program for women’s health and well-being—Use your natural 28-day cycle to optimize your productivity, fitness, wellness, relationships, and longevity
Women have an important biological rhythm they experience every month that affects cognitive function, weight, sex drive, energy, and mood. It is essential to be aware of and take care of this rhythm, but it has been widely ignored by medical, nutrition and fitness research. So as women, we diet, we deprive, and we cram as much as possible into our day, striving to accomplish impossible to-do lists, and scheduling our lives based on a 24-hour time cycle, ignoring the intuitive time our bodies naturally keep: a monthly cycle with four hormonal phases that offer incredible advantages.
In the FLO presents a revolutionary 4-week solution to manage your energy and time according to your female biochemistry. By working with each phase, you’ll support your hormones, unlock peak creativity and performance, and avoid burnout. You’ll know exactly when to eat certain foods, clear your social calendar, or ask for a raise—and you’ll have the tools to do so, including:
- Meal plans and recipes for each phase
- Charts for phase-specific exercises, work tasks, and relationship activities
- A daily planner that helps you align with your strengths in each phase
- A biohacking toolkit for navigating period problems and hormonal birth control
Alisa Vitti, functional nutrition and women’s hormone expert, bestselling author of WomanCode, and founder of modern hormone healthcare company FLOliving.com, has been teaching women how to reclaim their rhythm for nearly twenty years and has witnessed the incredible rewards it offers—including losing stubborn weight, regaining energy, clearing skin, and minimizing PMS.
By getting In the FLO, you’ll get more done with less effort, you’ll feel better consistently throughout the month, and you’ll enjoy the freedom that comes with living on your own time. Experience firsthand how small changes yield massive results.
- LanguageEnglish
- PublisherHarperOne
- Publication dateJanuary 28, 2020
- File size5.1 MB

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Editorial Reviews
Review
“When I first heard Alisa explain The Cycle Syncing Method, I was floored. As someone who has struggled with hormones, I couldn’t believe what we don’t know about our bodies… Working with Alisa has given me back my energy, made me a happier mom, and made me passionate about sharing this information with other women—it’s about time for us to get In The FLO.” — Gabrielle Union-Wade, actor, activist, and New York Times bestselling author of We’re Going to Need More Wine
“In this must-read hormonal guidebook, Alisa Vitti takes readers on a fascinating voyage inside the female body and brain to demystify the science of hormones. And she lays out a one-of-a-kind nutrition and lifestyle plan to balance hormones so you can think smarter, feel better, and stress less. Your body and brain will thank you for it.” — Daniel Amen, MD, psychiatrist, neuroscientist, and New York Times bestselling author of Change Your Brain, Change Your Life and Unleash the Power of the Female Brain
“Alisa is a true pioneer in biohacking for women and The Cycle Syncing Method is an effective way for women to align with their biological rhythms to optimize not only their health, but every other aspect of their lives from career to relationships to motherhood. Every woman should read this book!” — Dr. Mark Hyman, New York Times bestselling author of The Blood Sugar Solution
“In the FLO is Whole 30 meets BulletProof meets 4 Hour Work Week—but designed exclusively for a woman’s body. This book will change the way you eat, work out, manage your time and do your work—all in harmony with your body! It’s the next wave in women’s health and best of all, there aren’t any complicated rules to follow. Alisa will help you achieve your optimal health and live your best life.” — JJ Virgin, nutrition expert and New York Times bestselling author of The Virgin Diet
“This book teaches you how to use your biology to tune in to your inner guidance and to create optimal flow in every area of your life. It offers a path towards your highest power and potential.” — Gabrielle Bernstein, #1 New York Times bestselling author of The Universe Has Your Back
“Alisa walks you through the miraculous wonder that is your female body and how to connect your health, career, and even sex and relationships with your cycle to achieve amazing results with less effort – better orgasms included.” — Regena Thomashauer, New York Times bestselling author of Pussy: A Reclamation
“Trying to operate on a 24-hour clock can leave moms exhausted. Alisa’s revolutionary cyclical time management method will liberate you from the stress and exhaustion of trying to ‘do it all’ and instead adopt a more sustainable approach. Finally you’ll replace guilt over all the things you aren’t doing with guidance on the best ways to bond with your child and care for yourself week by week.” — Shefali Tsabary, Ph.D.,psychologist, educator, speaker, and New York Times bestselling author of The Conscious Parent
“Living in alignment with our cycle is the next frontier for women's health. Alisa’s book provides a tool for reconnecting with your unique female biorhythms - a powerful offering toward helping women reclaim hormone health, and much needed life balance.”
— Aviva Romm, MD, author of The Adrenal Thyroid Revolution
"Alisa brilliantly teaches us to use our hormones and specifically our female biological rhythm to our advantage - with diet, exercise, career, relationships, and motherhood. Finally, a book to end the battle with our bodies and food, reduce stress, and get back our energy." — Keri Glassman MS, RDN Founder Nutritious Life and The Nutritious Life Studio
"A highly researched, holistic guide packed with so much useful (and interesting!) information for women everywhere to better their health journeys." — Kimberly Snyder, New York Times bestselling author and holistic wellness expert
“What I love most about this book is how Alisa brilliantly teaches us to use our hormones and specifically our female biological rhythm, the infradian rhythm, to our advantage - with diet, exercise, career, relationships and motherhood. Finally, a book where we learn how our dynamic hormones are a good thing and how to empower ourselves with them to end the battle with our bodies and food, reduce stress, and get back our energy." — Keri Glassman MS, RDN Founder Nutritious Life and The Nutritious Life Studio
"What I love most about this book is how Alisa brilliantly teaches us to use our hormones and specifically our female biological rhythm, the infradian rhythm, to our advantage - with diet, exercise, career, relationships and motherhood. Finally, a book where we learn how our dynamic hormones are a good thing and how to empower ourselves with them to end the battle with our bodies and food, reduce stress, and get back our energy." — Keri Glassman MS, RDN Founder Nutritious Life and The Nutritious Life Studio
"To all my sisters out there: if you feel like you’ve reached a dead end in your quest for improved feminine health, if you are desperately trying to solve those confusing mysteries of fertility, hormonal acne, or missed periods, please don’t lose faith. In the Flo and Alisa's Cycle Syncing Method have helped me and other women greatly…[Now] I proudly celebrate the power of my female body." — Freida Pinto, actress
About the Author
Alisa Vitti, HHC, AADP, is a functional nutrition and women’s hormone expert, the founder of modern hormone health care company FLO Living, bestselling author of WomanCode, and creator of MyFLO, the #1 paid period app on iTunes and the first and only period tracking and cycle syncing app. Vitti holds degrees from Johns Hopkins University and the Institute for Integrative Nutrition.
Product details
- ASIN : B07CRKXNQC
- Publisher : HarperOne
- Accessibility : Learn more
- Publication date : January 28, 2020
- Edition : Reprint
- Language : English
- File size : 5.1 MB
- Screen Reader : Supported
- Enhanced typesetting : Enabled
- X-Ray : Enabled
- Word Wise : Enabled
- Print length : 382 pages
- ISBN-13 : 978-0062870551
- Page Flip : Enabled
- Best Sellers Rank: #32,951 in Kindle Store (See Top 100 in Kindle Store)
- Customer Reviews:
About the author

Alisa Vitti, CEO of FLOLiving.com
• Women’s Hormonal Health Specialist
• Functional Nutritionist
• Integrative Health Coach
Alisa Vitti, HHC, AADP (Holistic Health Counselor, American Association of Drugless Practitioners) is the founder of FLOLiving.com, a virtual health center that supports women’s hormonal and reproductive health.
Alisa began her journey in women’s hormonal health 15 years ago, when she was battling frustrating health symptoms. At the time, Alisa weighed 200 pounds, was covered in painful cystic acne, had her period about twice a year, and felt chronically fatigued. Doctors could not figure out what was wrong. Eventually, Alisa discovered she had PCOS.
The problem had been identified, but the treatment options were not so appealing. Doctors told Alisa that she would need to be medicated for life. She was told to expect a future of diabetes, obesity, infertility, heart disease, and cancer.
A voice inside of Alisa said “No!” She was not willing to accept this as her reality and took matters into her own hands. After graduating from John Hopkins University, where she was on the path to becoming an OB/GYN, she began studying integrative nutrition, Chinese medicine, and functional endocrinology. Guess what happened? Alisa completely healed herself of her hormonal problems and created a five-step protocol to help women around the world do the same.
After 10 years of running a thriving women’s wellness practice in Manhattan, Alisa took her business online. Today, thousands of women in five continents are studying and implementing Alisa’s protocol through her Hormonal Sync System (HSS), a one-of-a-kind online learning and support program. The program teaches women how to fix their period, protect their fertility, improve IVF cycles, recover from post partum mood, and boost their energy and libido. HSS has served as a trusted resource for many GYN and IVF specialists who want to recommend a natural solution for their patients.
Alisa is a popular speaker who has presented to audiences as large of 4000 people. She has spoken at TEDxWomen, Hay House’s “I Can Do It!” Ignite Tour, Women’s International Summit for Health, The Reveal Conference hosted by Donna Karan’s Urban Zen Foundation, American Infertility Association’s annual conference, Columbia University, and many more.
Alisa has also been featured in various media including CBS News, Fox Business News, Huffington Post, Life & Style, Natural Health UK, FertilityAuthority.com, and leading internet vlogs.
Customer reviews
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Learn more how customers reviews work on AmazonCustomers say
Customers find the book informative and empowering, teaching them about their bodies and providing a clear, easy-to-follow approach to cycle syncing. They appreciate its readability, with one customer noting it serves as a helpful guide for women of all ages. Customers report positive effects on mood and pain levels, with some experiencing relief from PMS symptoms and heavy bleeding. The book receives mixed feedback regarding its female focus.
AI Generated from the text of customer reviews
Customers find the book informative and empowering, providing extensive knowledge about the female body.
"...What sets "In the FLO" apart is its holistic approach to women's health, focusing on syncing daily activities with the body's natural hormonal cycles..." Read more
"...Even though this book is science-based, the way Alisa structures it and adds anecdotes along the way makes the information very approachable and..." Read more
"I’ve just started reading In the Flo, and it’s already packed with insightful and empowering information about syncing with your hormonal cycle...." Read more
"...With practical tips and advice on nutrition, exercise, and self-care tailored to each phase, it’s like a roadmap for living in sync with your body...." Read more
Customers find the book highly readable and consider it a must-read for women, with one customer noting it provides clear guidance on managing menstrual cycles.
"...I think this is a must read for any female...." Read more
"Love this book! Very informative. I no not like her app though and its expensive. I recommend using FEMME from the app store." Read more
"A must read for every woman. We aren’t taught what we need to know about our hormone health." Read more
"...I love this book, I reference it regularly for information. Absolutely worth reading and sharing!!" Read more
Customers find the book easy to read and follow, with clear explanations of the FLO protocol, and one customer particularly appreciates the detailed food and supplement charts.
"...Moreover, Vitti's writing is engaging and compassionate, weaving personal anecdotes with scientific research to create a narrative that feels both..." Read more
"...it and adds anecdotes along the way makes the information very approachable and conversational...." Read more
"...The writing is engaging and easy to follow, making complex health topics accessible...." Read more
"...This book is a great intro to learning and connecting more about our own biological clock and how are is differ from men...." Read more
Customers appreciate the book's approach to cycle syncing, as it clearly describes the cyclical female rhythm, with one customer noting it provides charts for each phase.
"...apart is its holistic approach to women's health, focusing on syncing daily activities with the body's natural hormonal cycles...." Read more
"...With practical tips and advice on nutrition, exercise, and self-care tailored to each phase, it’s like a roadmap for living in sync with your body...." Read more
"...I am so glad I did. This book taught me that my body works in a different cycle than society works...." Read more
"...This book is a great intro to learning and connecting more about our own biological clock and how are is differ from men...." Read more
Customers report positive effects from the book's strategies, with one mentioning reduced PMS symptoms and heavy bleeding, while others note improvements in moodiness and cramps.
"...as PMS, irregular periods, and hormonal acne, providing natural strategies to alleviate symptoms and restore hormonal harmony...." Read more
"...me and has improved my mood, mental clarity and I have almost zero PMS symptoms." Read more
"...implementing changes before I even finished the book and saw symptoms decrease...." Read more
"...Knowing you can impact moodiness and cramps...WHY WEREN'T WE TOLD THIS SOONER? It's never too soon to pick this up...." Read more
Customers report positive effects on their mood and emotional well-being, with one customer noting improvements in self-love and relationships.
"...Moreover, Vitti's writing is engaging and compassionate, weaving personal anecdotes with scientific research to create a narrative that feels both..." Read more
"...menstrual cycle, showing how each phase of the cycle impacts energy, mood, and productivity...." Read more
"...It has been helpful for me and has improved my mood, mental clarity and I have almost zero PMS symptoms." Read more
"...on the female body and how hormones work, balancing your cycle, and self love. so beautiful!..." Read more
Customers report feeling better and experiencing painless periods, with one mentioning they feel more energized.
"...I was in such bliss and felt absolutely amazing for the first time EVER with my period. Let me tell you, it is a crazy empowering feeling!..." Read more
"...My body works differently, and this book helped me see that. My body needs rest. It needs a reset...." Read more
"...tips about eating, exercising, and even social life have helped me allow myself to rest and work hard when my body can handle it...." Read more
"...I feel better AND I am more productive and satisfied too. Highly recommend this book and implementing her ideas." Read more
Customers have mixed reactions to the book's female focus, with some appreciating its feminine-centered approach and feminist perspective, while others criticize its heavy emphasis on patriarchy.
"This book is the Tits! Literally reinforces things I’ve been wondering about and helps me know my body better...." Read more
"...are A LOT OF repetition on the same thing: telling you the social doesn't focus on female, everything we have learned is wrong, if you follow her..." Read more
"...So much good information in this book! Women’s bodies are amazing!" Read more
"...However, there is a lot of feminist perspective sprinkled throughout the book...." Read more
Reviews with images

Every woman should read this book
Top reviews from the United States
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- Reviewed in the United States on May 14, 2025Format: PaperbackVerified PurchaseThis book is revolutionizing the way that I think about my body.
- Reviewed in the United States on July 11, 2024Format: PaperbackVerified PurchaseAlisa Vitti's book "In the FLO: Unlock Your Hormonal Advantage and Revolutionize Your Life" is a groundbreaking guide that empowers women to harness the power of their hormones for optimal health and well-being. As someone who has struggled with hormonal imbalances and their effects, I found this book to be a game-changer.
What sets "In the FLO" apart is its holistic approach to women's health, focusing on syncing daily activities with the body's natural hormonal cycles. Vitti introduces the concept of "FLO Living," a lifestyle framework designed to support each phase of the menstrual cycle—Menstrual, Follicular, Ovulatory, and Luteal—through tailored nutrition, exercise, and self-care practices.
One of the book's strengths lies in its accessibility and practicality. Vitti breaks down complex hormonal science into digestible insights, making it easy for readers to understand how their hormones influence everything from energy levels to mood and productivity. She offers actionable steps and customizable plans that empower women to take control of their hormonal health.
Personally, I found Vitti's insights into nutrition particularly enlightening. Her emphasis on nourishing foods that support hormonal balance, coupled with recipes and meal plans, has helped me make informed choices about what I eat to support my overall well-being.
"In the FLO" also addresses common health challenges such as PMS, irregular periods, and hormonal acne, providing natural strategies to alleviate symptoms and restore hormonal harmony. This holistic approach resonated with me as it encourages a deeper connection with my body and its natural rhythms.
Moreover, Vitti's writing is engaging and compassionate, weaving personal anecdotes with scientific research to create a narrative that feels both relatable and informative. Her advocacy for women's health empowerment is evident throughout the book, fostering a sense of empowerment and understanding about our bodies' innate wisdom.
In conclusion, "In the FLO: Unlock Your Hormonal Advantage and Revolutionize Your Life" is a must-read for any woman seeking to optimize her health through a deeper understanding of her hormonal cycles. It's a comprehensive guide that not only educates but also inspires positive changes in lifestyle and mindset. Whether you're looking to alleviate hormonal symptoms or simply enhance your overall well-being, this book offers invaluable insights and practical tools to support your journey.
- Reviewed in the United States on February 27, 2020Format: HardcoverVerified PurchaseI immediately purchased this book after hearing Alisa on That’s So Retrograde. I was familiar with charting and had read Taking Charge of Your Fertility, so I had at least an understanding of the various phases and their emotional impact. Even though this book is science-based, the way Alisa structures it and adds anecdotes along the way makes the information very approachable and conversational. I adore how she clearly nerds out about this topic.
I already had switched to a fairly clean diet (organic, mostly plant-based) and did my best to minimize stress (I mean, c’mon, easier said than done) after having some GI issues. I also have been using a menstrual cup for about 2.5 years and noticed my flow seemed a little lighter. These changes at least got my cycle to be somewhat predictable (I was previously diagnosed with PCOS and my cycles could be up to 50 days; now I’m down to 35 at the most). However, I have ALWAYS struggled with cramps the day before I got my period, the first day, and leading into the second. I would also pass several sizable clots the first couple days. There have been times that I would have to stay home from school or work because I couldn’t function with the pain and heavy flow. It never crossed my mind that this isn’t “normal.” I always thought these things were normal for me and that was just the luck of the draw. I mean, tons of women/trans men suffer from cramping.
I was at the tail-end of my luteal phase when I read this book and implemented a few of the supplements suggested and switched to decaf right before my period was supposed to start. I didn’t have any expectations since I was already doing a lot of the things the book suggested (so my transition was really minimal), but then my period came and I had. no. cramps. NONE! The “pain” was sort of like a dull headache just on day one. I was in such bliss and felt absolutely amazing for the first time EVER with my period. Let me tell you, it is a crazy empowering feeling! I am still in shock and could cry at the thought of a painless period. Additionally, the color was just as the book explained. No old blood (which I would typically start and end with).
While I’m certainly hopeful that when my period comes next cycle I will have the same experience, I’m so thankful to Alisa and her research to give me at least one good period in 25 years! It IS possible! I feel obligated to share this book with every woman I know! I will update next cycle to note any changes.
UPDATE:
Happy to report that I had another period with minimal pain. This time I had a little more discomfort just the first day, but it was NOTHING compared to what I experienced in the past. Just a twinge periodically. I wasn’t consistent with the supplements, so this cycle I’ll be sure to be more diligent about taking them. I’ll update this review periodically if I note something additional about my experience that may be beneficial or interesting for others.
- Reviewed in the United States on April 10, 2025Format: PaperbackVerified PurchaseI’ve just started reading In the Flo, and it’s already packed with insightful and empowering information about syncing with your hormonal cycle. The content is so engaging and helpful—but I do wish the font were larger. My eyes get tired quickly, and bigger text would make the reading experience much more comfortable.
- Reviewed in the United States on December 19, 2024Format: PaperbackVerified PurchaseIn the Flo is an absolute must-have for women looking to understand and optimize their health throughout the month! This book offers an empowering approach to understanding the menstrual cycle, showing how each phase of the cycle impacts energy, mood, and productivity. With practical tips and advice on nutrition, exercise, and self-care tailored to each phase, it’s like a roadmap for living in sync with your body. The writing is engaging and easy to follow, making complex health topics accessible. Highly recommend In the Flo for any woman looking to take control of her well-being!
- Reviewed in the United States on November 21, 2024Format: PaperbackVerified PurchaseI highly, highly recommend this book. Every time I open this book I learn something new. I got this book on kindle and then immediately ordered a physical copy because I was highlighting so much. I also got it to share with friends and family. I think this is a must read for any female. There is so much that we aren't taught about who we are and I wish I would've learned these things much earlier in life. GREAT book!
Top reviews from other countries
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natalia pacheco ramirezReviewed in Mexico on February 10, 2021
5.0 out of 5 stars Increíble!
Format: HardcoverVerified PurchaseIncreíble! Lo recomiendo a todas las mujeres.
- Viktoria P. KalenterisReviewed in Canada on December 8, 2024
5.0 out of 5 stars Great Book
Format: PaperbackVerified PurchaseWisdom for women is exceptional.
- AbbeyReviewed in the United Kingdom on July 10, 2023
5.0 out of 5 stars Arrived very quickly
Format: PaperbackVerified PurchaseWorth reading!
- YemiReviewed in Japan on March 15, 2025
5.0 out of 5 stars A book for all humanity
Format: PaperbackVerified PurchaseThis is a book meant for everybody to know how wonderfully the woman's body works and to treat it as the temple it is.
-
SabineReviewed in Germany on June 5, 2024
5.0 out of 5 stars Game changer: Niemand hat es uns gesagt !
Format: HardcoverVerified PurchaseDieses Buch ist ein echtes game changer.
Wir verstehen uns, als Frau, so viel besser und machen, was entsprechend für jeden Tag ist.
So komplett mit über 20 Jahren Forschung.
Jedes Mädchen sollte es bei der Pubertät lesen, before ein Arzt die Pille vorschreibt.
Macht ihr euch dieses wünderschönes Geschenk.