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 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 Running Another Scary Reason You May Not Want to Do a Mud Run The Workout You Need to Do If You Want to Be a Faster Runner The 300-Calorie-Burning Walking-Jogging Workout Hot-Weather Running Gear That'll Have You Begging For Sun Celebrity Fitness Jared Leto in National Parks Makes For the Most Gorgeous Photos You'll See Today These Celebrity Instagram Snaps Are Your New Workout Motivation Julianne Hough's Favorite Dance Move For a Better Butt Start the Day Right With Harley Pasternak's Breakfast Smoothie 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 Yoga Weight Loss Working Out Running Sign up with By signing up, I agree to the Terms and to receive emails from POPSUGAR.