Finding time to exercise can be a challenge for anyone with a busy schedule. Why not work out while you're at work? Here are five ways to make office exercise part of your routine: 1. Walk or bike to work, get off the bus a few blocks early, or park farther from the door. 2. Look for opportunities to stand. Try a standing desk, or improvise with a high table or counter. 3. Trade your office chair for a fitness ball. 4. Organize a lunchtime walking group. 5. Conduct walking meetings.