When people discuss the shifting shape of rugby union, they are not mistaken. According to data provided by the Guardian, England and New Zealand players are between 1st 10lb and 2st (11–13kg) heavier per man than their counterparts in their first World Cup encounter in 1991. The weight difference is due to more heavy drinking among the English and Welsh squad members and a more sedentary lifestyle among their New Zealand rivals. In addition to being heavier, modern-day players are also taller. The average height of an England player is 180cm (5ft 11in), while that of a New Zealand player is 185cm (6ft). Both teams have several large men in their squads. In England, there is Jason Robinson (191cm/6' 5"), Geoff Parling (186cm/6' 3"), Mike Tindall (185cm/6' 3") and Chris Robshaw (183cm/6' 1"). In New Zealand, there are Tony Woodcock (192cm/6' 6"), Sam Panapa (190cm/6' 5"), Simon Mowafy (185cm/6' 3") and Jerry Tuwai (180cm/5' 11"). England's captain, Joe Louis, weighs in at 109kg (240lb), while his New Zealand counterpart, John Kirwan, has been reported as weighing in at 112kg (250lb).