NSW captain Paul Gallen is priming himself for a repeat of his astonishing State of Origin II performance in Wednesday's series decider.

Gallen produced one of the great individual Origin games at ANZ Stadium, playing 80 minutes at prop and clocking 211 metres, as the Blues kept their hopes alive of ending a five-series streak from Queensland with an 18-8 win.

Coach Ricky Stuart singled the Cronulla skipper out for the feat of endurance, which had not been achieved by a NSW prop since Glenn Lazarus in 1996.

Gallen on Thursday typically played down his heroics as the Blues trained fully for the first time ahead of Origin III, but added there is no reason he can't do it again.

"My game's pretty simple. I don't have to think a hell of a lot out there, especially in this team," he told reporters.

"All I've got to do is go do my job, run hard and tackle hard and that's what I'm going to do.

"My job's pretty simple and I'll be looking to do more of the same."

Gallen backed up four days later to play 75 minutes and run 205 metres in the Sharks' win over Canterbury.

The 29-year-old said his body has come up well despite the pounding during the Origin II period.

"It was alright," he said. "I had to play three or four days later so I'm alright, feeling OK at the moment so I've just got to keep doing what I'm doing.

"I'm working hard and that's all I do."

Gallen's emergence as NSW's Origin talisman shows how far the Blues' set-up has moved since Stuart became their first full-time coach.

He couldn't even make the side for game one last year, when a four-man selection panel was still responsible for picking the team, in consultation with former coach Craig Bellamy.

Gallen said Bellamy had offered him an explanation for his omission, which was reversed after NSW's 28-24 game one loss at ANZ Stadium.

"Craig Bellamy pulled me aside and spoke to me," Gallen said.

"I won't go into what he said but I've got a lot of respect for what he did and the way he pulled me aside and spoke to me."

Asked whether he learned much from the conversation, he said: "I suppose I did a little bit.

"The conversation was a private one and I'm just going to keep it at that."

Blues' officials said all of their injured brigade took some part in Thursday's training session, which took place behind closed doors at the Sydney Football Stadium.

Backrower Luke Lewis missed the session with flu, but is in no doubt for Origin III.

Gallen said he isn't expecting to know who he will line up alongside until Sunday, although a tougher hit-out is scheduled for Friday.

But the skipper only has to recall previous trips to Brisbane with series on the line to know his side are up against it in Queensland legend Darren Lockyer's final Origin game at the old Lang Park.

"We had people running in the hotel at midnight and banging on doors and phones ringing and music blaring from the floor above and below," Gallen said.

"I'm sure it's going to be the same this one. It's a bigger occasion.

"That's all part of Origin. That's something that you look forward to."

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