He reappeared on Friday, with videos circulating of the heavyweight fighter entering the retreat.

Stepping inside a pitch-black room with only a bag of clothes, AJ laughed as his pal joked, ‘nice and dark for you’.

Anthony Joshua spent £2,000 to spend four days completely alone in a pitch-black chamber.

Joshua believed he would come out of the process without being bored due to the power of ‘the subconscious’ mind

The heavyweight has now been pictured entering the retreat for the first time earlier this week.

Anthony Joshua's friend has now posted footage of the moment they arrived at their £2,000 darkness retreat on Monday before they went into separate huts and AJ spent four days alone with his thoughts in a pitch black room: "This is where lions are made."

[🎥 Healthy Mindset] pic.twitter.com/6ScKk0x7UR

— Michael Benson (@MichaelBensonn) October 21, 2023

He was later captured sitting outside when a pal stated, ‘I’ve never seen you look so forlorn. You’re just sitting there, waiting for your turn to chill out in this small hut.

AJ responded, “There are times when I ask myself why I put myself in this situation.” But… this is where lions are bred!

‘What I’m trying to do is present myself. There’s not much I really need, just me.

Sitting around a campfire later that night, AJ’s pal acknowledged that he wouldn’t be there without him as they began their four-day retreat.

This follows the 34-year-old’s previous admission that he regrets not focusing on the mental part of boxing.

He told Men’s Health earlier this month that he used to think boxing was ‘all physical’ in his career. ‘Wake up and get on with your day, train,’ he advised.

AJ spent the time away from his phone in a small, pitch black room, as he revealed he wanted to show that he only needs himself

Joshua emerged on Friday, with the room said to help with relaxation and processing thoughts

‘After losing fights, you question yourself and start realising the mental side is as important.

‘I would have been more disciplined, reflecting on how his career may have gone if he’d considered mental health more earlier on in his career. I don’t know if that would have made me better, but I would have done things more professionally.’

This led to him embarking on the retreat, as he discussed what he expected to gain from the experience, saying: ‘There is so much stored in the subconscious,

‘What’s the worst that can happen? The worst is death so if it doesn’t do that, all good.

‘I said to them I was a bit scared and he said that’s a good thing. By October 20, I will be one of the coolest people, coming out after sitting for four days in the dark.’

He is yet to break his silence since having his four days away from social media and his phone.

It remains to be seen as to what is next for the British boxer, who beat Robert Helenius back in August.