The groundbreaking book that revolutionized exercise nutrition and performance for female athletes, now freshly updated.

In ROAR, exercise physiologist and nutrition scientist Stacy T. Sims, PhD, teaches you everything you need to know to adapt your nutrition, hydration, and training to work with your unique female physiology, rather than against it.

By understanding your physiology, you’ll know how best to adapt your lifestyle and build routines to maximize your performance, on and off the sports field. You’ll discover expert guidance on building a rock-solid foundation for fitness and everyday life with tips for determining your high-performance body composition, gaining lean muscle, and nailing your nutrition. Because a women’s physiology changes over time, you’ll also find full chapters devoted to pregnancy and menopause.

This revised edition includes a wealth of new research developments, expanded recommendations based on those findings, and updates to reflect the changing landscape of women's sports, including:

• An updated action plan for peak performance across all phases of your menstrual cycle, as there is never a bad day to perform at your best
• A fresh understanding about the impact of hormonal contraception on training
• A look into why you need more protein than the average woman and how these needs change across your lifespan
• The reasons why sleep is your most powerful recovery tool and how to manage disruptions to your internal clock
• A deep dive into saunas, cold plunges, and other training and recovery techniques as they apply to female physiology
• Insights into biohacking and what works (and doesn’t) for active women

No matter what your activity is—Olympic lifting, general fitness, endurance, or field sports—this book will empower you with the personal insight and knowledge you need to be in the healthiest, fittest, strongest shape of your life.

A comprehensive, physiology-based guide to peak performance for active women approaching or experiencing menopause—from the author of Roar, renowned exercise and nutrition scientist Dr. Stacy Sims

For active women, menopause hits hard. Overnight, your body doesn’t feel like the one you know and love anymore—you’re battling new symptoms, might be gaining weight, losing endurance and strength, and taking longer to bounce back from workouts that used to be easy. The things that have always kept you fit and healthy just seem to stop working the way they used to.

But menopause doesn’t have to be the end of you kicking ass at the gym, on the trail, in the saddle, or wherever you work out. Once you understand your physiology, you can work with it—not against it—to optimize your performance. That’s where Stacy Sims, PhD comes in. In Next Level, you’ll learn the underlying causes of menopause: the hormonal changes that are causing all the symptoms you’re feeling, and their impact on your wellness and performance. Then, what you really came for—what to do about it.

Inside you’ll find science-backed advice about training, nutrition, sleep and recovery and supplements, as well as sample exercise routines, meal plans, macronutrient planning charts, and case studies from real women Stacy has coached through the transition. It’s the ultimate guide to navigating the Next Level.