CHICAGO–(BUSINESS WIRE)–New research from Vitality, a global leader in behavioral change in health, has found that U.S. workers lose an average of 63.4 days of productive time each year because of poor physical and mental health. For the purposes of the Index, “productive days lost” converts both time missed through absence and estimated reductions in performance while at work into the equivalent number of full working days. Of those, 53.9 days (85% of the total) are lost while employees are