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TENNIS BALL TO THE GROIN... FOR SCIENCE!

The Postmen // A Sports Blog // Chicago, ... found this 1/29/2008 on withleather.com

Sport Science , a show on FOX Sports that delves into the scientific mysteries of sports, unlocks a real brain twister in this video.  For generations, the greatest human minds have wondered, "Will a man's heart rate go up if he thinks he's going to get hit in the testicles?"  In order to navigate this labyrinthine scientific problem, they fired a tennis ball at 50 mph ...