CM Punk left the squared circle for the Octagon as he will have his first UFC fight in a few months, and he said he turned for former UFC Heavyweight Champion and current WWE World Heavyweight Champion Brock Lesnar for advice.

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Lesnar's first stint with the WWE ended in 2004 and he eventually ended up in UFC, but he retired from the MMA realm in 2011 after a bout with diverticulitis.

"The Beast" then returned to the squared circle, eventually ending The Streak of The Undertaker at WrestleMania XXX and winning the WWE World Heavyweight Championship.

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Punk, who said he'd like to see Lesnar return to UFC when his contract with the WWE expires later this month, spoke with The Toronto Sun during UFC 185 this past weekend and mentioned seeking advice from Lesnar.

"I've talked to him once, he lives in the middle of nowhere where there's no cell service, he's in the middle of like, Saskatchewan, I don't even know," Punk told the publication. "I asked him what the hardest thing for him to do was, because obviously he's a freak athlete but something had to be difficult, and I find it's the exact same thing I'm having difficulty with, which is learning to let go. Striking or sparring is completely different, somebody's trying to punch me in the face and I'm trying to punch someone in the face, but often I'll find I'm too light on guys if I'm [working on his ground game.] My hips aren't heavy enough. It's like the old pro-wrestling kicking in, and he had the same problem."

Punk isn't the first person to jump from the WWE to the UFC, and he likely won't be the last either. "The Best in the World," who left the WWE in January 2014 after being frustrated and was officially terminated from the company in June, said he could see a lot of guys deciding to enter the MMA realm.

"I think the Undertaker said it, I think there's tons of guys [in WWE] who, if the money had been different in the '90s or whatever, they would have done [MMA]," Punk said. "There's a lot of guys in wrestling who have this MMA fantasy and they never act on it. I don't want to be one of those people who sits there and says, 'I would have done that' or "I should have done that.' I can, so I'm doing it."

Lastly, Punk, who is said to be making his debut in late 2015, talked about training out of Roufusport in Milwaukee.

"Every day when I walk in there I think I'm still the lowest guy on the totem pole," he said. "I'm walking into their school and there's fighters there who maybe should already be in the UFC and guys fighting on lower circuits who could kick my (expletive), and they're kind to me."

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