There's an unusual silence on the team bus as North heads out for another training run on Monday. The opportunity to get an extra hour's sleep during transit is welcomed with open arms by the majority of the players.

Arriving at Utah University, the mood changes as the adrenaline begins to kick in. The footballs are brought out and to a man, spirits lift. This is what they are here for.

After a two-hour training session, a punishing conditioning session follows on a nearby sporting field.

It's hard work, but through it comes a common goal; the desire to improve.

"Towards the end I was starting to struggle a lot and had a couple of dry-retches in the last max-effort," Brad McKenzie told NMFC.com.au.

"But we know we get that much fitter from these camps so that's why we keep pushing. Just coming here for three weeks, it's not a huge amount of time but you can definitely feel the benefits when you get back to Melbourne."

A man of few words, the classy left-footer is also using the camp to work on another side of his development.

"I've always kept myself on the outside and didn't get involved as much as I should have," he admitted.

"Just in the game-sense drills, I want to get myself more involved in the game, to start using my voice and start directing my team-mates.

"There's seven of us living in the same sort of room during the camp, so it helps a lot, just gaining that confidence amongst the guys and then taking that out onto the training track."

McKenzie and his team-mates will be joined by North's newest recruits on Tuesday (Utah time), as Trent Dumont and Ben Brown arrive in Utah.

It looms as a daunting initiation for the draftees, with the last week presenting a great share of challenges, including an endurance hike next Wednesday.