Jennifer Sacheck is an Associate Professor of Nutrition in the John Hancock Research Center on Physical Activity, Nutrition, and Obesity Prevention at the Friedman School of Nutrition Science and Policy and a Scientist at Tufts University. After completing her doctoral studies in nutrition, exercise, and muscle physiology, Dr. Sacheck completed a four-year post-doctoral fellowship at Harvard Medical School further examining factors influencing muscle health. She is co-author of the book, Thinner This Year. Follow her on Twitter @drjensacheck.