POPSUGAR Fitness Celebrity Fitness Celebrity Running With David Kirsch Guess Which Celeb Went Running With Trainer David Kirsch? by Fitness 7/10/11 5 Shares Like us on Facebook Sign up for our daily newsletter > Can you guess which one of David Kirsch's celeb clients joined him for a run? FIND YOUR WORKOUT Read More David KirschCelebrity FitnessRunningGuess Who Celebrity Fitness "I've Never Felt as Comfortable in My Own Skin Than I Do Now," Says Khloé Kardashian Feel Instantly Inspired to Move With These Celeb Instagram Pics More Proof of Why Taylor Swift Is Secretly a Fitness Warrior 20 Celebs Who Traded in Cheese For a Vegan Diet Running From Training Schedules to Meal Plans: What's Needed For Your First Race This Plus-Size Model Has Some Serious Wise Words For Anyone Who Wants to Run Challenge Yourself to a 5K — With Your Dog! Find Out How This 400-Calorie Workout Targets Your Tush POPSUGAR, the #1 independent media and technology company for women. Where more than 75 million women go for original, inspirational content that feeds their passions and interests. Get fit with our daily newsletter Running Yoga Working Out Weight Loss Sign up with By signing up, I agree to the Terms and to receive emails from POPSUGAR.