10,000 steps, gym work-out increases productivity: Study

The Body-Brain Performance Institute, in collaboration with Melbourne's Swinburne University's Brain Sciences Institute, identified 40 employees of the Melbourne branch of global software company SAP in April. They gave them pedometers, which measure footsteps, and then split them into two groups.
http://ummid.com/news/2011/September/16.09.2011/gym_work_productivity.htm