NEW YORK (Reuters) - With the three-martini lunch gone the way of the typewriter, office workers are free to discover the healthier perks of midday movement. An active lunchtime can range from the sweaty to the serene, experts say, from a full-out cardio blast to a walk in the park. "People who want to get in a good workout over lunch hour can do simple things like go for a walk," said Dr. Cedric Bryant, chief science officer of the American Council on Exercise. "Think about it. Thirty minutes on a regular basis would meet the minimum threshold for physical activity," he added. U.S. ... read more..