Will Smith beat the holy hell out of his kickboxing instructor recently -- crushing a training bag with MULTIPLE devastating shin strikes -- and TMZ has obtained the shockingly intense footage.
According to sources, Will is in the market for a new gym -- and had stopped by Brazen Boxing & MMA in Philadelphia earlier this week just to scope the place out.
Will stayed for a 20-minute MMA training session -- with badass Bellator fighter Jamall "X Factor" Johnson -- and we're told ... the actor's an EXTREMELY quick learner.
Inflicts BLUNT TRAUMA
In Real-Life Kickboxing Footage
8/15/2011 5:00 AM PDT BY TMZ STAFF
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