ranning

= Running =
 * Running is the fastest way for moving forward on foot. The differences between running and walking is that in running this is a moment that non of the legs touch the ground. Unlike walking that at list one l **** eg contacts the ground each second. **
 * running is sometimes aerobic and **** sometimes **** anaerobic sport. **

Time: 6sec-1min

 * Short running is anaerobic **

Time: 5 min- some hours

 * Long Short running is aerobic sport. **

sorses of information
http://en.wikipedia.org/wiki/Running