Period Power: Harness Your Hormones and Get Your Cycle Working For You
Shows how to read your menstrual cycle as four hormonal seasons, track your own pattern with pen and paper, and plan rest, new projects and big public moments around how your body actually feels.

Table of Content
1. Introduction
1 min 01 sec
If your energy, mood and appetite seem to change for no reason from one week to the next, the pattern may already be sitting inside your monthly cycle, waiting to be read. In Period Power, menstrual health coach and practitioner Maisie Hill argues that these shifts do not make anyone less level-headed. They follow the rise and fall of two hormones, estrogen and progesterone, closely enough to be predicted and planned around.
Hill pictures the cycle as four seasons: a wintry period, a fresh spring, a bright summer around ovulation and a demanding fall before bleeding starts again. Her case is simple. Once you know which season you are in, through a few weeks of plain tracking, your cycle stops ambushing you and starts working as a calendar for rest, new projects, bold moves and honest review. A notebook and two or three months of attention are enough to see your own version of it.
2. Read the hormone map behind each month
1 min 38 sec
Most people bleed for decades without ever being shown what their body is doing in between. A short tour of four hormones and one tiny gland explains why the same month can feel so different from week to week.
3. Track your cycle with only pen and paper
1 min 51 sec
A cycle that runs too long or too short is easy to ignore. Hill treats it as a message about your whole life, and she reads it with a tool most people never bother to use.
4. Use your period as a season for rest
1 min 42 sec
Pushing through your period as if it were any other week may be the worst plan available. Hill sees those first days as the best moment of the month for a very different kind of work.
5. Start new habits in spring and make them stick
1 min 45 sec
The days after a period often bring a burst of fresh energy, but not for everyone. One client’s story shows what can drain that spark and how a few months of changes brought it back.
6. Save big, public moments for ovulation
1 min 54 sec
For a few days each month, the body needs less sleep, craves company and radiates confidence. Hill explains what drives that peak, what it means when it never shows up, and a thermometer test that tells you.
7. Turn the premenstrual inner critic into an editor
1 min 55 sec
The week before a period can bring a harsh voice that finds fault with your job, your partner and yourself. Hill suggests a surprising response: listen closely, because some of what it says may be right.
8. Steady your hormones through every life stage
2 min 03 sec
Puberty, pregnancy and perimenopause each rewrite the monthly rhythm. Hill offers one anchor that works across all of them, along with a few daily choices, including one about contraception that many doctors rarely discuss.
9. Conclusion
1 min 13 sec
Period Power starts from an insult, the idea that a woman who bleeds cannot be trusted with her own judgment, and ends somewhere far more useful. In some cultures menstruating women were said to spoil milk or ruin a harvest. Hill turns that around: because the cycle reacts to stress, food, sleep and illness, it is one of the clearest readouts of overall health a person carries.
The practical change is small. Instead of expecting the same output every day, you match the work to the season. Winter is for rest and looking back, spring for starting things, summer for the meeting or speech that needs your boldest self, and fall for honest editing and guarding your energy.
Begin with a notebook and a few words each evening. After two or three cycles, move one demanding event out of your fall and into your summer. If your period hurts, try Hill’s castor oil pack: a flannel soaked in castor oil, laid on the abdomen under a hot water bottle for 30 to 60 minutes.
The mood someone once dismissed with a sneer becomes a schedule you wrote yourself.
About this book
What is this book about?
Many women are told their mood swings make them less reliable, and many quietly believe that their cycle is something to endure or switch off. Maisie Hill, a menstrual health coach and practitioner, argues the opposite. The monthly rise and fall of estrogen and progesterone is predictable, and once you know its pattern it can guide when you rest, when you start things and when you take on your boldest tasks. Hill explains the biology in plain terms, then maps the cycle onto four seasons: a wintry period for rest and reflection, a spring of fresh energy, a summer of confidence around ovulation and a fall that sharpens your inner critic before bleeding begins again. She shows how to track each season with a notebook or an app, how to spot signs of low estrogen, missed ovulation or low progesterone, and how stress, diet, sleep and contraception shape the whole cycle. Readers get a practical way to turn a confusing monthly pattern into a personal calendar.
Book Information
Who it's for
Women with shifting energy
Women whose energy and mood swing from week to week and who want to plan around it.
Professionals with mistimed meetings
Professionals who keep booking big meetings or social events on their worst days of the month.
Dealing with difficult cycles
Anyone with irregular, painful or heavy cycles who wants clearer questions for their doctor.
About the Author
Maisie Hill
Maisie Hill is a menstrual health expert, coach, practitioner and birth doula. She trained in Chinese medicine, acupuncture and the Arvigo Techniques of Maya Abdominal Therapy, and her comments on menstrual and hormonal health have appeared in The Guardian and Grazia. Period Power, published in May 2019, became a bestseller, and she followed it with Perimenopause Power in 2020. She also hosts the Maisie Hill Experience podcast and founded Powerful, a life coaching membership.
Ratings & Reviews
Ratings at a glance
What people think
Listeners find this book highly informative, offering in-depth explanations that help them gain a better understanding of their bodies. They view it as a crucial resource for women’s health, with one listener highlighting that it includes topics such as perimenopause and menopause. The writing is described as clear and accessible, and listeners appreciate the focus on seasonal planning; one listener mentioned that it entirely transformed their outlook on monthly cycles. Listeners describe the book as empowering, with one noting it helped them bond with their body, and many calling it life-changing.
Top reviews
Finally found a guide that treats the menstrual cycle like the superpower it actually is. Maisie Hill has a way of explaining the hormonal shifts that occur throughout the month that just makes everything click. For years, I viewed my period as a nuisance to be endured, but the "seasons" framework completely shifted my perspective. Mapping out my work commitments and social life to align with my internal winter and summer has been genuinely life-changing. There are definitely some parts that feel a bit "out there," but the core message of empowerment and bodily autonomy is so strong. I’ve started recommending this to every friend who feels disconnected from their own anatomy. It’s dense, informative, and written with a warmth that makes you feel heard.
Show moreThis should be required reading for every person with a uterus. I feel like I finally have the owner's manual for my body that I should have been given at puberty. The way Maisie breaks down the cycle into spring, summer, autumn, and winter is a stroke of genius. It gave me a vocabulary to describe why I feel social and creative one week, and then completely withdrawn and exhausted the next. Truth is, I used to think I was just moody or unreliable, but now I see there’s a biological rhythm at play. It’s incredibly empowering to move away from the shame that usually surrounds periods. Whether you’re dealing with pain or just want to understand your fertility better, there is something in here for you.
Show moreEvery person who menstruates needs to buy a copy of this immediately. It is so much more than just a book about periods; it’s a deep dive into how to live in harmony with your biology. I loved the level of detail regarding hormonal shifts and how they impact everything from skin health to sleep. The inclusive language was also a breath of fresh air. I’ve even had my partner read certain sections so they can understand why my "inner autumn" makes me so sensitive. It has sparked some great conversations in our house. Even if you don't agree with every single wellness tip, the wealth of information here is staggering. It’s dense, funny, and incredibly relevant in 2024.
Show moreAs a woman in her thirties, I’m shocked it took me this long to understand how my hormones affect my mood and energy. This book fills a massive gap in our education system. Hill’s writing style is punchy and accessible, which makes the complex science feel easy to digest. I particularly appreciated the sections on perimenopause, as that’s a topic often ignored until you're right in the thick of it. My only gripe is the occasional use of internet-y buzzwords and a somewhat infantile tone when discussing self-care. It felt a bit patronizing at times. Still, the practical advice on tracking patterns is something I will use for the rest of my life. It’s a solid resource for anyone wanting to take back control.
Show moreThe concept of "seasons" is what initially drew me to this book, and it didn't disappoint. It provides a much-needed framework for understanding why our energy levels aren't constant throughout the month. Maisie Hill’s approach is compassionate and inclusive, which I really valued. However, look, some of the advice regarding supplements and "natural highs" from pain felt a bit dodgy. I’m not sure I’m ready to swap my Ibuprofen for a "trippy experience" when I’m doubled over at my desk. Despite the occasional "wooliness," the overall message of being kinder to yourself is something we all need to hear. I’ve started a menstrual journal as suggested, and seeing the patterns emerge has been eye-opening. Definitely worth a read.
Show moreI’ll be the first to admit that I cried during the first few chapters because I finally felt seen. For so long, I’ve felt like a slave to my hormones, and this book validated every single struggle I’ve had with my periods. Maisie writes with so much empathy. It feels like talking to a very knowledgeable, albeit slightly "crunchy," older sister. The advice on how to talk to your GP was particularly helpful for someone like me who tends to get dismissed in medical settings. Frankly, the book is worth it just for the confidence boost it gives you to advocate for your own health. It’s not perfect—some of the "Universe has your back" stuff is cheesy—but the emotional impact is undeniable.
Show moreTo be fair, I went into this expecting a lot of pseudoscience, and while there is definitely some "woo" in the middle sections, the biological foundation is surprisingly solid. The way the author explains the rise and fall of estrogen and progesterone makes the internal chaos of PMS feel manageable. I’m still a bit skeptical about mapping my cycle to the phases of the moon if I'm not bleeding, but I appreciate the attempt at inclusivity. The book is beautifully designed and the tone is conversational enough to keep you turning pages. It has encouraged me to pay more attention to my body every day of the month, which is a victory in itself. A few questionable dietary suggestions aside, it’s a very strong resource.
Show moreThe first section of this book is absolute gold, providing a clear biological breakdown of what happens during our cycles. I learned more about my own body in those fifty pages than I did in three years of high school biology. However, the further I read, the more I struggled with the heavy doses of "woo" and pseudoscience. Hill speaks with immense authority on topics like cod liver oil packs and moon mapping, but the lack of rigorous evidence is jarring. I also found the suggestion to rearrange my entire professional life around my "seasons" to be incredibly privileged. Who can actually tell their boss they aren’t doing a presentation because they’re in their "inner winter"? It's a nice thought, but hardly practical for anyone in a standard 9-to-5.
Show moreWhile I appreciate the sentiment of this book, I think I enjoyed Taking Charge of Your Fertility much more. Period Power feels a bit light on hard data and a bit heavy on anecdotal stories. It’s a very engaging read, don't get me wrong, but I found myself questioning the validity of some of the health claims. The author’s stance on masturbation and period sex also felt a bit "preachy" in a way that didn't sit right with me. I don’t need to be told how to hashtag my own body. That being said, if you’re brand new to the world of cycle tracking, this is a much more readable entry point than a dry medical text. It’s a mix of great biological facts and questionable wellness tips.
Show moreI really wanted to love this after hearing so many rave reviews, but the elitism was a massive turn-off. The dietary advice is particularly egregious—suggesting an autoimmune paleo protocol that cuts out almost everything is just not realistic for most people. If you have any history of disordered eating, please stay away from that chapter. Furthermore, the way the birth control pill is vilified felt very judgmental. I appreciate that Maisie tries to hedge her language, but the underlying message is clear: hormonal contraception is a "harmful" choice. For someone who relies on the pill for health reasons, reading this felt like an attack. There is some good science at the start, but the "quackery" that follows made it impossible for me to finish.
Show moreQuestions about this book
What is the main idea of Period Power by Maisie Hill?
Hill argues that the menstrual cycle is a predictable rise and fall of estrogen and progesterone, not a source of unreliability. She maps it onto four seasons: the period as winter, the days after as spring, ovulation as summer and the premenstrual week as fall. By tracking your own pattern, you can plan rest, new projects and demanding events for the season that suits them.
How do you track your menstrual cycle the way Period Power suggests?
Hill recommends writing a few words each day about energy, mood, sleep, appetite, libido, pain, digestion or headaches, plus anything personal such as cravings or which tasks feel hard. A notebook works, and apps like Clue and Kindara are alternatives. After one cycle you see your pattern, and after a few more you can predict your moods and energy as well as your period.
What are the four seasons of the menstrual cycle?
Winter is the period, when hormones are lowest and Hill advises rest and reflection. Spring follows as estradiol rises, bringing energy for new habits. Summer surrounds ovulation, when estradiol and testosterone peak and confidence and desire are high. Fall is the premenstrual stretch, when hormones drop, PMS may appear and the inner critic grows loud, which Hill treats as a chance to review what is not working.
How can you tell if you ovulated, according to Maisie Hill?
Hill points to basal body temperature. Before ovulation it is typically around 36 to 36.5 degrees Celsius, and afterward progesterone raises it by about 0.2 degrees. A rise near day 14 that stays up indicates ovulation. If summer’s usual energy never arrives, she suggests you may not have ovulated, which can happen with undereating, overwork, stress or PCOS.
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