Your boss may not have considered how much more productive his or her employees would be with a little exercise. If you can, encourage your boss to:
Work with local gyms to provide membership discounts for employees
Work with local personal trainers to provide monthly seminars or free body fat testing for employees. Some trainers will even do this for free
Set up daily or weekly walks during lunch or after work
Give you extra breaks during the day to take quick walks
Be active. If the boss exercise, employees will take their own health more seriously