Known for his bullocking runs and team-lifting acts of desperation, the North Melbourne vice-captain has shed six kilograms since Round 23.
Coupled with having another pre-season under his belt, the midfielder looms as a powerful weapon in 2014.
"I've felt really good this camp. I've dropped a couple of kilograms which is nice and helped me get through the running, but I'm still as strong as what I was which is important as well," he told NMFC.com.au from Utah University on Wednesday (local time).
PRESS PLAY above to watch the Ziebell interview | YouTube
"The altitude plays a part (in slimming down) with all the boys so I'd expect to put a couple of kilos back on when we get back to Melbourne, but the body's feeling really good at the moment."
Ziebell had a fine finish to the year, gaining respect from the wider football public for his courage and never-say-die attitude.
Being able to withstand the rigours of a permanent midfield role has taken work though. The number seven has worked tirelessly to increase his aerobic capacity since joining the club in 2008.
While it's an area he'll continue to work on, Ziebell is happy with where he's at after a testing camp.
"It's been solid, but this is why we play the game, to get better and to improve as individuals and more importantly as a team.
"My main goal for the pre-season, not just the camp is to do every session and I know if I do every session it's going to hold me in pretty good stead for the year."
Wednesday's final session included a mix of running, tackling and full-ground drills, then an extra bonus, more running.
"We call them Brad's drills and they are 50 metre shuttles which can get quite solid, especially after a bit of game-sense work."
While it's the fourth camp of its kind, the 2013 version has been arguably the most rewarding for the players. With a schedule based more around football, the group has been able to spend greater time fine-tuning their skills, as a team.
"The boys have bought in really well and trained really hard. It's been a fantastic three weeks away together.
"The biggest thing is making sure you stay motivated and getting up for every session. The biggest challenge is making sure you get your body right for each session and to try not to miss a session as well which is really important in the scheme of the pre-season."
Ziebell says the players have driven each other to new levels.
"When you think you're feeling pretty bad, you look over to the person next to you and I guarantee they are feeling the same way," he added.
"That's the good thing about a team sport like footy and at the North Melbourne Football Club you know you are not in it alone and we're in this together."
The new additions to the club during the off-season have also been welcomed.
"They've all trained really well. I'm really impressed with Nick Dal Santo and Robbie Nahas, what they've brought so far. Their first three weeks has been nothing short of impressive."
Now in his sixth pre-season, Ziebell believes the development of North's emerging list has come with longevity.
"The majority of our group has been together for the last four or five years and it's been really important that we've stuck together," he said.
"We've had some pretty tough times, but we're really looking forward to this year and trying to improve over the pre-season and get out there and start playing footy. That's what all the fans want, that's what all the players want as well."
The North Melbourne team will depart Utah on Thursday, before getting straight back into training at Aegis Park next week.
