LeBron James: Keeping a billion-dollar body in shape
Updated 1039 GMT (1839 HKT) December 13, 2017
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- Mancias has worked with James for 14 years
- Previously teamed with Michael Jordan's trainer
- Mancias entrusted with James during offseason
(CNN)Everyone knows about LeBron James and his fanatical workouts, but not many people know about the guy entrusted with keeping his billion-dollar body in shape.