Anthony Joshua steps up training prep ahead of ‘Big Baby’ Miller with forest run

BOXING star Anthony Joshua has gone back to basics in training as he prepares to take on Jarrell Miller after he posted a clip of himself running through a forest.

The 29-year-old will make his stateside debut on June 1 at Madison Square Garden as he defends his WBO, WBA and IBF heavyweight world titles.

Joshua has been uncharacteristically vocal in the build-up to the bout against Miller - where he labelled the American as a "b****" as well as declaring he pays his mum's rent.

The duo had to be held back in their fiery press conference in New York, where Miller shoved AJ when the two went face-to-face.

And Joshua clearly has another knockout victory on his mind as he steps up his training as he looks to take America by storm.

Running through a forest wearing a hat, gloves and multiple layers, the 2012 Olympic gold medallist was filmed putting in the hard work on a crisp Spring morning.

Joshua captioned the video: "Road work like it's 08."

The unbeaten KO specialist trains in Sheffield ahead of his fights, where he uses the GB boxing base alongside the country's leading amateur prospects.

Even though Joshua is worth a reported £35million, his humble training base boasts only a single bed, worn out sofas and just one communal bathroom.

Should Joshua prevail against Miller, he is expected to turn his attention to a fight against Deontay Wilder or Tyson Fury.

Wilder, 33, has claimed that the Brit ace turned down a chance to meet him inside the ring last year.

While the Gypsy King made Joshua an offer on the weekend - insisting he can come round his house and pick up his dog poo.