Anthony Joshua has the muscle power, but Wladimir Klitschko has counted out the Englishman's impressive biceps.

The 27-year-old Joshua will defend his IBF world heavyweight title against Klitschko before a predicted British post-war record crowd of 90,000 at Wembley on April 30. The veteran Ukrainian is expected to struggle against the younger man's power and athleticism.

The 41-year-old Klitschko told reporters: "AJ has a lot of energy, he's young, he wants to show it. He has these big muscles that give him confidence. He wants to demolish people right in front of him.

"I have a lot respect for Anthony and what he's doing. His commitment and physical ability - he can box, he can lift weights, he's strong."

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"But did you hear about boxing? It's the sweet science. Every other person would have been like that and would have smashed people. The most vicious boxers were conquered."