MindBlowing Workout

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=lx4iOKh2eeE

The fastest quarter-miler in history, Michael Johnson had the potential to break the 43-second barrier if he did just one thing differently

how to run fast, how to run 400m, how to break 43 seconds, sub 43, 42.6, workout, michael johnson, the fastest, quartermiler
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