Watch the astonishing workout Anthony Joshua performs to make his neck rock solid ahead of Alexander Povetkin's clash (Video)

British- Nigerian heavyweight champion, Anthony Joshua will be defending his world titles against the Russia's Alexander Povetkin at Wembley Stadium on Saturday.

Ahead of clash, here is a video showing how the WBA, WBO, IBO and IBF world title holder has been strengthening his neck which is part of his gruelling training programme.

The boxer performed a front neck bridge, also known as the wrestler's neck bridge.

Watch the video below.