Ask the Fight Doc: Is UFC heavyweight Roy Nelson’s weight holding him back?

Roy Nelson didn’t win the fight, but he likely won over many fans in a hard-fight loss to Junior Dos Santos at this past weekend’s UFC 117 event.

And though Nelson is the first to poke fun at his rotund body, could the extra weight be holding him bac…

Dr. Johnny BenjaminRoy Nelson didn’t win the fight, but he likely won over many fans in a hard-fight loss to Junior Dos Santos at this past weekend’s UFC 117 event.

And though Nelson is the first to poke fun at his rotund body, could the extra weight be holding him back?

In our latest “Ask the Fight Doc” installment, MMAjunkie.com medical columnist Dr. Johnny Benjamin discusses some of the myths of cardiovascular fitness and why nearly all heavyweight fighters – not just Nelson – usually are sapped by later rounds.