In other words: Stop trying to be fit, and start trying to live fit.
Second, of course, is to stand more throughout the day. These strategies will get you up on your feet more often:
Strategy #1: Take two breaks an hour. Grab a drink from the water fountain. Pop over to the cube next door to say hi. Or simply stand and stretch for a minute. A European Heart Journal study of 5,000 men and women found that the quarter who took the most breaks during the day were 1.6 inches thinner than the quarter who took the least.