Wow, now why is it that the Uk is doing this for Rugby and American Football is not? American Football, those guys on the line are huge, sucking wind every chance they get. Imagine that on Fox monitoring the stats of a linebacker and the quarterback. The coach could take them out before they blow up and sub when needed. Wow this could completely change sports for the good. Would make it a heck lot more interesting to watch, cause why do they drink liquid every chance they get?