[postlink]https://runtube.blogspot.com/2009/06/livestrong-how-to-build-endurance.html[/postlink]http://www.youtube.com/watch?v=3S0jAD4CBXQendofvideo
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Endurance is a slow and gradual process to build when running. Learn how exercises can build endurance in this workout video.
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[starttext]
Endurance is a slow and gradual process to build when running. Learn how exercises can build endurance in this workout video.
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