Active Community: improving 40 yard dash

370 Views 0 Replies Latest reply: Jun 4, 2011 12:12 PM by num1bucsfan11

num1bucsfan11

9 posts since
May 22, 2011

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improving 40 yard dash

need help to improve my 40 yard dash time, i am at 5.4 seconds but would like it under 4.9. Please help