Joel Harper is a New York City celebrity personal trainer who has been developing custom workouts for countless clients, including Olympic athletes, supermodels, and actors, for more than twenty years. Harper created the personal workout chapters for the New York Times bestselling YOU book series as well as the accompanying workout videos. He makes regular appearances on The Dr. Oz Show and has been seen on ABC News, CBS News, Fox News, Good Morning America, Oprah, CNN, Discovery Health, The Today Show, and more.