Banned Substance

(credit: CBS)

Adrian Peterson: ‘I’m All Natural. I Work Hard.’

Embracing the challenge has always been a part of Adrian Peterson’s persona. Following his quick comeback from reconstructive knee surgery, surpassing the 2,000-yard mark and the league MVP award last season for the Minnesota Vikings, Peterson said Friday he’d eagerly accept another test: for human growth hormone. The NFL and the players union have been working on an agreement for HGH testing procedures.



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