Sonny Bill Williams is an individual with a bit of a cult following around the world due to the fact that he is, well, a bit of a beast. If picking up a Super Rugby title with the Chiefs and a World Cup winners' medal with the All Blacks wasn't enough - as well as a couple of National Rugby League titles - he has a 7-0 record in professional boxing. In general, you don't mess with Sonny Bill.
During the summer Williams was a part of the New Zealand sevens team and their efforts to win the Olympic Games in Rio, but he ruptured his Achilles in his team's first game and has spent the intervening period on the sidelines, trying to get himself into decent nick ahead of the Super Rugby season beginning at the end of February, where he will line out for the Blues.
And it would appear that he is in pretty decent nick indeed.
This great video from Joseph Coyne of 'Coyne Sports Injury and Performance' gives some indication of just how hard Williams is working to try and get back to full fitness. According to 'Stuff', he's expected to return to action in May, which seems ludicrously far away given his shape but perhaps shows just how finely tuned a professional rugby player needs to be.
Williams will be a key part of the All Blacks squad by the time the British and Irish Lions roll into town in the summer, in what is already looking like a mouthwatering prospect.