CORE TRAINING ESSENTIALS
4:13
Added: 4 years ago
From: optforspeed
Views: 7,439
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  • Great video working all levels of conditioning. Thanks.

    chm97chm97 2 years ago

  • Great video Kevin, thanks!

    DominaVera1 2 years ago

  • i was under the impression that you should do crunches instead of sit-ups unless you like having a bad back..

    partylikeitsnine 4 years ago

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