Krista Varady, PhD

Krista Varady, PhD, is an associate professor of nutrition at the University of Illinois and the world’s leading researcher into alternate-day fasting. She has published more than 30 papers on the topic in prestigious journals such as The American Journal of Nutrition and Obesity, and she has discussed her breakthrough findings with consumer magazines, such as Elle and Men’s Health.

Bill Gottlieb, CHC, is the bestselling author of 11 health books and a Certified Health Coach. He is a former editor-in-chief of Rodale Books and Prevention Magazine Health Books, and has written for Cosmopolitan, Reader’s Digest, Men’s Health, Runner’s World, Self, and many other publications