Video - Robert Guerrero is using CrossFit training to get him ready for next fight

[hectari]

I have to say this man, I am impressed with the physical change, Robert put on a lot of muscle with definition his body looks impressive but will his stamina and conditioning be the same? I saw him shadow boxing and his handspeed seem to increase, Rob must be a genetic freak look at how much muscle he put on his arms in 4 months time.