“…2, 3 Because of the adverse impact of physical inactivity and obesity on health care costs, many organizations have initiated ‘wellness' programs, which may include facilities at the work site to encourage exercise. 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 Although these programs have often resulted in improved fitness for participants, weight loss has been more difficult to achieve. 5, 6, 13, 14, 17 …”