Rob Knight: Warming up isn't enough to avoid injury

For decades we've watched as professional athletes spend a whole lot of time warming up behind the pre-game interviews on game day, from stretching to sprinting and everything in between.  The professionals take it seriously and so do the amateurs - parents will know the rush to show up an hour or two early to make enough time for a thorough warm up on a Saturday morning.  LISTEN ABOVESee omnystudio.com/listener for privacy information.