Former NFL middle linebacker Patrick Willis of the San Francisco 49ers offers a taste of his "homegrown" workout during an off-season training session.
Get a chart of Willis’s upper body workout: https://goo.gl/G4BMPS
Watch what Willis does for his core: https://goo.gl/eRoVQq
Check out what Willis’s told us during while he trained: https://goo.gl/bIfWuv
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