<http://schema.org/description>
"Only 20 percent of U.S. adults meet both the federal government's aerobic and muscle-strengthening physical activity recommendations, officials say."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Health_News/2013/05/02/1-in-5-adults-meet-physical-activity-guidelines/UPI-91591367535730/?pvn=1>