Dolphins' running back Ricky Williams admitted on Monday that he was tempted to smoke marijuana during the team's bye weekend. "Most definitely," Williams said. "It's greater because, like, Thursday, Coach told us we had Friday off, so automatically your mind, which is so constrained since training camp began -- every day is a grind, it's a grind, it's a grind -- and then Coach says 'you're free.' And the mind says, 'I'm free, what can I do?'" "So there was definitely an urge. But I just thought about what I have to lose, and it was easy. The urge didn't last very long." Williams has been in the NFL's substance-abuse program since 2002, having tested positive four times. He said he successfully combated the urge by meditating. "I've done a lot of work at understanding myself a little bit more," Williams said. "So I recognize [the urge] was just a result of the feeling of being free, and I was just trying to maximize it. And I realize that I really enjoy meditating and when I can go home and sit in my room and meditate, I can get the same feeling." Williams is tested nine times per month on a random basis. The man who administers the tests for the league sometimes shows up at Williams' home before dawn. "I'd be lying if I said I'm never going to do it again after I'm done [playing]," Williams added. "I don't know. I don't spend much time thinking about it."