NSW switched on to full State of Origin mode as coach Phil Gould put up the shutters and barked his way through a rigorous Blues training session in Sydney.

After spending Monday night on the drink to get reacquainted with teammates - or, in Blues bolter Phil Bailey's case, introduced to new ones - NSW finally got down to business.

Tuesday's fan day at Toyota Park must have seemed a world away as Gould put his players through 75 minutes of fitness, mostly on the tackle bags, to sweat the fun out of the Blues.

Injured second rower Ben Kennedy ran for the first time this week, but only lightly, and was unable to complete the demanding session.

He spent the final half hour laying with an ice pack on his left hamstring.

Kennedy said the injury was coming along well and both Blues physiotherapist Liz Steet and captain Andrew Johns were confident he would be fit for the series opener at Suncorp Stadium next Wednesday night.

"He'll be fine and he can play with injuries," Johns said of his Newcastle clubmate.

"So with the staff we've got there, he'll get the best treatment off the physio and doctors and I think he'll be right, for sure."

Steet said the Blues were happy with Kennedy's progression.

"He did more today and he'll do more tomorrow with me," she said.

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