<http://schema.org/description>
"It seems that almost every week a new health app or fitness tracker enters the market or an existing one announces a new feature to help us meet our heal..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.huffingtonpost.co.uk/betsey-banker/do-fitness-apps-really-wo_b_12484830.html>