KSI shows off insane Mike Tyson neck training routine as YouTube icon prepares for Misfits battle against Joe Fournier

KSI showed off his crazy Mike Tyson-style neck training routine just days before his next fight.

The YouTube, music and influencer boxing star meets a multimillionaire nightclub tycoon 9-0 boxer Joe Fournier on Saturday.

And ASI has prepared himself from head to toe for the toughest fight of his career, especially on his neck.

In pre-fight practice, he would roll around the canvas of the boxing ring with his weight behind his neck, an exercise Tyson made famous.

The aim of the exercise is to build up the neck muscles in order to be able to better withstand blows.

Tyson — the youngest heavyweight champion at age 20 — once had a 20-inch neck measurement when he was 18.

And KSI, 29, will be hoping to channel his inner Iron Mike when he takes on 40-year-old Fournier. at Wembley Arena.

And he sent a brutal warning to his closest rival as fight night drew near.

KSI told DAZN: “I’m ready, finally I can get my hands on this bastard, sorry for my language.”

“Joe Fournier is about to be in hell when he steps in this ring. I can barely wait for it.”

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“The alpha, the omega, the man who taps, will pat his head over and over again, baby.”

But Fournier later replied, unimpressed: “He’ll do what he has to do, I think that’ll knock him out.”

“I think that aggression, look at Ryan Garcia, look at how he passed out because he was too aggressive.”