Siik, David: - David Siik is the program and content director of Precision Running at Equinox and the author of the Ultimate Treadmill Workout. David has trained Hollywood's biggest stars, elite athletes, and the best trainers in the business. As the leader in indoor running and treadmill innovation, David has won a number of industry awards and attention from The New York Times, Good Morning America, People, and more. A longtime Ford model, David has appeared on numerous covers and in countless ads over the last decade. He is based in Los Angeles and travels nationwide in support of his program.