Fitness Guru and "In-Demand" weight-loss specialist Bill Crawford was on special assignment from the governement: Develop an exercise program for Submariners, under the conditions of confinement, limited space, and minimum storage. Bill Crawford's GYM TO GO was the result of a military operation in naval fitness. Built on the same concept that many expensive home gyms employ, GYM TO GO utilizes resistance training for use with all resistance "rubber bands" Visual instruction that shows you how to utilize the GYM TO GO properly and effectively. 14 Different Resistance Training Exercises developed by Bill Crawford personally. Stay in shape while on the go. Exercise in your dorm, or use your hotel room as your own gym! Legal Disclaimer: Neither the Department of the Navy nor any component of the Department of Defense has approved, endorsed, or authorized this product or service.