The fabled 20-8-2 rule for office workers (sit 20 minutes, stand 8 minutes, walk 2 minutes) has real-world validity, according to Mark Benden, director of Texas A&M’s Ergonomics Center, in this latest episode of "Problem Solved." But keeping your workforce – whether office-bound, at home or in a factory – healthy, happy and productive involves a systematic combination of human, equipment and training that will vary by employee. Benden also discusses how artificial intelligence and machine learning will help research move from active to passive sensors and build living systems that learn when, where and how to prompt your workforce to make the right adjustments and take the right breaks to achieve optimal productivity.