<http://schema.org/description>
"Running indoors on a treadmill is a great way to maintain your training when you can&amp;#039;t make it outdoors. But how does an app on your smartphone measure the distance you&amp;#039;ve covered when you&amp;#039;re not actually going anywhere?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://electronics.howstuffworks.com/gadgets/fitness/accelerometer-know-how-far-ran-on-treadmill3.htm>