JOSEPH PARKER has given a rare glimpse behind the scenes of his final preparations to face Brit Joe Joyce on Saturday.
And a training montage shows the Kiwi working out with WBC heavyweight champ Tyson Fury.
It also contains footage of Tyson's dad John furiously pounding at Parker's stomach and ribs with a medicine ball.
This controversial training method was reported to have broken Tommy Fury's ribs before his fight with Jake Paul, although Tommy denied it.
The video opens with Parker hammering the heavy bag, then moves on to him doing some pad work inside the ring as he works up a serious sweat.
Parker, who looks sharp and explosive, then practises body shots by blasting away at someone wearing protection.
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He moves on to pad work with John Fury and a speed ball workout, followed by deadlifts, shadow boxing and pull-ups.
And many would argue some of what Parker posted in his YouTube video is not ideal, or at least a risky, preparation.
Parker faces Joyce in Manchester, coming off back-to-back wins against Brit Derek Chisora.
Parker is seen lying down in the ring beside Tyson, who shouts encouragement while dad John shows no mercy,beating Parker's torso all over with a medicine ball.
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Parker than returns to conventional gym workouts like squatting and dumbbells.
It remains to be seen if the brutal Fury methods will help Parker overcome Brit Joyce, with the winner becoming mandatory for Oleksandr Usyk's WBO belt.
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