Natalie Rizzo, MS, RD, Author: Natalie Rizzo, MS, RD is passionate about simplifying complicated sports nutrition information for everyday athletes. A NYC-based media dietitian, food and nutrition writer, national spokesperson, and owner of Greenletes, she has bylines in over ten national publications and is quoted as a nutrition expert in publications such as NBC News, SHAPE, Runner’s World, Muscle & Fitness, and Oprah.com. She has run over fifteen half-marathons and two marathons.