St. Louis, MO (KSDK) - Michael Phelps took home an unbelievable eight gold medals in Beijing, but before he plunged into the pool in London he put on the gloves.
On Tuesday afternoon, Ryan Shanahan, the man behind KettleWorx and a new workout called BattleBag MMA, stopped by the KSDK studios with a few exercises to get us on the path to those chiseled abs.
Click here to see the interview and start burning calories.
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