Dr Stacy Sims, PhD, is an exercise physiologist and nutrition scientist who aims to revolutionise exercise nutrition and performance for women. She has published more than 70 peer-reviewed papers, and authored female-focused performance optimisation books, Roar, and Next Level, which challenge the existing dogma around exercise, nutrition, and health for women. She regularly speaks at professional and academic conferences, including those by USOC and USA Cycling. She lives in Mount Maunganui, New Zealand. Follow her on X and Instagram. Visit drstacysims.com.
Written by
Jon Lipsey
Jon Lipsey is the co-founder and Content Director of Unfiltered. The most successful UK editor in the history of Men's Fitness magazine, he has spent more than two decades working in health, fitness, longevity and human performance. He has interviewed leading figures in sport, politics and business, such as Pelé, Lord Coe and Bryan Johnson. He speaks at industry events including The Longevity Show and advises health brands on strategy and storytelling.


