The arm swing is critically important for stabilizing the body when running. It is also an area where runners can often make major efficiency improvements.
RT @runnersworld: 9 sensible ways to EAT WELL without overdoing it this holiday season: http://t.co/J6f3WImig6 Today
RT @sweatscience: Do race tactics matter? Breaking down intermediate placings in mid-distance qualifying races from 2012 Olympics: http://t… Today
RT @nyrrmaryruns: Thx to all the coaches who help kids run! Making it happen. #jjnglebelljog #nyrr http://t.co/NcHeytJXOO Today
Who had a good run today? Check out the photos from the #JingleBellJog and Reindeer Run: Looking good! http://t.co/dmnykEnq4z #runchat Today