Images of the All Blacks visibly struggling in the heat and humidity in Japan have filtered back to New Zealand but Jim Cotter, a professor at the school of Physical Education at the University of Otago, reassured New Zealanders that they had given themselves enough time to adapt before their Rugby World Cup opener against South Africa on September 21.
"That's plenty of time," Professor Cotter told Stuff. "They'll have full adaption of what they need by then.
"You don't want it too much more, that's too much time away. That's the time you need.