The Australia squad was given as serious run out with temperatures in the high 30s, the first high intensity training run many of the players had done since their NRL seasons ended.
VIEW PHOTO GALLERY FROM TRAINING
Winger Brett Morris was pleased to blow a few cobwebs out as the six-week campaign gets under way.
"It was a tough session," said Brett Morris. "The heat didn't help.
"It was a good first hit out and I'm sure the boys are going to be a bit tired and sleep well tonight.
"We've got a long camp leading into the first game so we'll definitely be prepared for the game."
Australia open Pool A against heavyweights England in Cardiff on October 26.
It's a crucial game for both sides with the winner likely to top the group and enjoy a clearer path to the final at Old Trafford on the 30th November.