The Fifth Vital Sign: Master Your Cycles & Optimize Your Fertility Audiobook By Lisa Hendrickson-Jack cover art

The Fifth Vital Sign: Master Your Cycles & Optimize Your Fertility

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The Fifth Vital Sign: Master Your Cycles & Optimize Your Fertility

By: Lisa Hendrickson-Jack
Narrated by: Lisa Hendrickson-Jack
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$8.99/mo. after 3 months. Cancel anytime. Offer ends July 15, 2026 at 11:59pm PT.

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Menstruation isn't just about having babies.

Your menstrual cycle is a vital sign, just like your pulse, temperature, respiration rate, and blood pressure. And it provides you with essential information about your health.The Fifth Vital Sign: Master Your Cycles and Optimize Your Fertility brings together over 1,000 meticulously researched scientific references in a textbook-quality guide to understanding your menstrual cycle.

In this book you’ll learn:

  • What a normal cycle looks like;
  • The best way to chart your cycle and increase your fertility awareness;
  • How best to manage critical aspects of your health, including better sleep, exercise, and a healthier diet;
  • Natural methods for managing period pain and PMS;
  • How to successfully avoid pregnancy without the pill; and
  • How to plan ahead if you do want to get pregnant.

The Fifth Vital Sign aims to better connect women with their menstrual cycles, to break the myth that ovulation is only important when you're ready to have a baby.

Listen to The Fifth Vital Sign to better understand your health and fertility. Whether children are a part of your future plans or not, your health matters. Start learning more now, and take control of your health.

About the author

Lisa Hendrickson-Jack is a certified Fertility Awareness Educator and Holistic Reproductive Health Practitioner. She teaches women to chart their menstrual cycles for natural birth control, conception, and overall health monitoring. In her work, Lisa draws heavily from the current scientific literature and presents an evidence-based approach to fertility awareness and menstrual cycle optimization.

PLEASE NOTE: When you purchase this title, the accompanying PDF will be available in your Audible Library along with the audio.

©2019 Fertility Friday Publishing Inc. (P)2019 Fertility Friday Publishing Inc.
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Evidence-based Research • Comprehensive Information • Actionable Strategies • Empowering Content • Accessible Explanations

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I've been a childbirth educator and birth doula since 10 years and am beyond thrilled to find this resource for my clients. This book is a must-read for anyone who ovulates/menstruates!!! If that's you, please please read this book. Whether you're trying not to conceive, trying to conceive, or just wanting to increase body awareness and wisdom so you can become your own best health detective, this is the BEST book for any and all of that.

My top recommendation to women!

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A wealth of research and knowledge was poured into this book! As a Registered Nurse working in women’s health education, I firmly believe in advocacy… and The Fifth Vital Sign is packed with firm evidence- and clinical-based information. This book gives the power back to women and menstruators to advocate for their health! I recommend it to all of my clients interested in knowing their TRUE options in birth control and health optimization.

A must read for healthcare professionals!

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The author did a wonderful job of making this subject matter relatable and easy to understand.

Every girl should be taught this before she becomes a woman!

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This is such an important book. I wish I had been given it on my 13th birthday. Every woman should be taught this information !

A must read for every biological female!

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I chose this book for the vast and researched information following listening to Lisa’s Fertility Fridays podcast. It did not disappoint. It filled in the gaps I needed to understand my body and reduced the fear about being older trying to conceive. Between the podcast and the book it’s been 2.5 months eating healthy (even liver 😉) and today I got my first positive pregnancy test. I know it’s early but now I believe it’s possible for me to become pregnant where before I doubted it. This book is for people who are willing to listen to the research, track signs and symptoms, and change their eating habits. Again, thank you!

Thank you!!!

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