Thor Bjornsson has lost an incredible 50kg in remarkable weight loss ahead of fight against Eddie Hall.

The Icelandic native has trimmed down from 205kg to 145kg but some of his fans worry that he doesn't look healthy in his new physique.

The former strongmen rivals will fight on 19 March in Dubai, six months after their original fight was cancelled because Hall tore his bicep.

145kg is the lightest weight the fighter has been since his youth with fans saying he looks like 'two different people.'

Fans of Hall, per The Mirror weighed in with their thoughts on Bjornsson's appearance with one saying: "He doesn't look healthy at all, has he even slept this year because it doesn't look like it."

Another added: "Thing is with your size and power will hurt him, he will have lost loads of power to probably be faster."

Hafthor Bjornsson shows off his physique | Credit: Instagram

This fight will be the Englishman's first time stepping in the ring whereas the Icelandic fighter has appeared in one amateur fight and two exhibition boxing matches.

The rivalry between the pair dates back to their time competing at the 2017 Worlds Strongest Man competition.

The Brit, speaking to Muscle and Health has described Bjornsson as a 'back cloud' over him and has vowed to knock him out in their fight: "To be honest, I just want to bang this guy out, bang him out again, and then just get him out of my headspace.

Hafthor Bjornsson shows off his physique ahead of Eddie Hall fight | Credit: Instagram

"I've spent too much time fixated on wanting to hurt this man and I just need to move on.

"He wronged me in 2017, he's put a black cloud over me for a number of years. I just want to put that to bed and move on with my life.

"I want to hurt him. This is a serious fight. We actually genuinely hate each other."

Bjornsson is currently training in Scotland with coach Billy Nelson. Hall is training in Stoke and has sparred with professional boxer Thomas Carty.