Greenspan, Jason S.: - Jason S. Greenspan is President and Founder of Practical Fitness & Wellness, Inc., a fitness management company located in New York City and Silver Stars Fitness, a fitness studio that specializes in working with the baby boomer client. He is author of The Amazing Water Bottle Workout: No Gym, No Weights, No Problem!, he has been featured in GNC's magazine "Well Bella," the Washington Post, New York Post, Penthouse Magazine, Examiner.com, Crains Magazine, Shape.com, Men's Fitness, Well+Good NYC.com and was a guest on the Frankie Boyer health & fitness talk radio show, NY1 and CBS.