Jennifer Purdie is the author of “Growth Mindset for Athletes, Coaches and Trainers,” published by Ulysses Press. She’s also a TEDx speaker on running, certified personal trainer for the National Academy of Sports Medicine, and a fitness and nutrition specialist from the American Council on Exercise. She contributes to The Los Angeles Times, Washington Post, GOOD Magazine, VICE, and Buzzfeed. She also served as a copywriter for the American Council on Exercise.