Tyson Fury challenges Oleksandr Usyk for the undisputed heavyweight title next monthCredit: EPA

Former pound-for-pound king Oleksandr Usyk has been hard at work in the gymCredit: INSTAGRAM@USYKAA

The Ukrainian showed off his incredible strength by flipping and catching kettlebellsCredit: INSTAGRAM@USYKAA

Both men have tucked themselves away for the biggest training camps of their respective careers, although Usyk has given his fans little glimpses of his preparation on social media.

And fight fans were left stunned by the Ukranian’s latest workout video, which he shared on his official Instagram page.

The clip showed a beefy-looking Usyk flipping KETTLEBELLS 360 degrees and catching them perfectly while he performed swings.

After performing several gruelling reps, Usyk flung the hefty weights on to a spongey mat and received a brief round of applause before shadowboxing.

Footage of Usyk’s incredible feat of strength spread like wildlife on social media and received a slew of comments from fans.

One wrote on X: “Woww Usyk is not playing too.”

Another said: “Juggling/Flipping one Kettlebell is challenging. Let alone two at the same time.

“Takes a certain amount of skill level. To properly perform this exercise. Usyk is a bad dude. That’s for sure.”

And another said: “Washed Fury won’t keep up with his pace.”

One remarked: “Great shape. I can’t wait for February 17th.”

Another chimed in: “Usyk taking all the belts home.”

One boxing fan defiantly said: “Usyk is going to embarrass Tyson over 12 rounds. LFG champ.”

Another stunned viewer said: “Flipping one Kettlebell is hard enough.

“But two of them at the same time? Good lord, Usyk.”

Unified heavyweight champ Usyk will enter the biggest fight of his career on the back of a ninth-round TKO win over Brit Daniel Dubois in August.

Fury, meanwhile, goes into the Riydah rumble on the back of a narrow win over former UFC heavyweight champion Francis Ngannou last October.

Tyson Fury has vowed to stop Oleksandr Usyk in brutal fashionCredit: EPA

But the Gypsy King is confident of immortalising himself with a brutal stoppage victory.

He said: “It’s going to be one of the fights for the ages.

“I believe we are both destined to be here and to be in this big fight in Saudi Arabia.

“And there’s only one winner, and I am destined to become the undisputed champion.

“More than that, I am destined to cement my legacy as the No. 1 fighter in this era.

“To do that I have to beat this little man and that’s it, simple as.

“Easier said than done I understand, he’s a tricky man, good boxer, slick.

“But I have seen many people like him before and when they fight the big men they struggle.

“He’s going to struggle on February 17 and he’s going to lose, I will break him for sure.”