Anthony Joshua emulates Cristiano Ronaldo with SIUUU in the gym as he enjoys some down time before starting serious preparations for Oleksandr Usyk rematch

Anthony Joshua pulled off his own version of Cristiano Ronaldo’s trademark ‘SIUUU’ celebration in the gym on Thursday.

The former heavyweight world champion will soon begin serious training camp as he attempts to regain his belts from Oleksandr Usyk.

As usual, AJ has been staying in the gym and honing his craft before camp even starts.

He is now training with Angel Fernandez as his main coach in Loughborough.

This week, footage emerged of him having some fun in the gym with training partner Wadi Camacho.

Joshua and the cruiserweight contender engaged in a challenge where they both stood on a single ledge and attempted to knock one another off.

When AJ won, he celebrated with Ronaldo’s SIUUU.

Usyk is contractually obligated to a rematch with Joshua, who he beat and dethroned of his WBA, IBF and WBO heavyweight world titles back in September.

However, when Russia invaded Ukraine, the champion flew back to his home country and joined his local territorial defence in Kyiv.

For the past month, it has been unclear as to whether Usyk would be able to take the rematch.

Ukraine is under martial law, meaning no adult male between 18-60 are allowed to leave.

Now though, it has emerged that there is an exception which allows fathers of three of more children under the age of 18 to leave Ukraine at present.

Usyk has done exactly that and will soon begin training for the second fight with AJ.