"I'm also really looking forward to growing my business and being able to make a difference around Whanganui."
Ms Rennie owns a company called Polished Marketing which she now operates in Whanganui, as well as broadcasting on Hokonui from the old NZME studio.
"This year I'm celebrating 30 years in broadcasting at the very same radio station I started at, in the same building, from when I was 17 years old," she said.
"I didn't make the decision to move here until NZME set the studio up for me to do that, they just made it so easy."
Despite the hefty workload, Ms Rennie was enjoying the challenge of co-managing at the club.
"Yeah I have quite a work load, but hard work never killed anyone. There are 400 families involved in the gym in this region, so it's an important organisation," she said.
"We're looking to improve the services that we offer, things like catering and accommodation - we're going to crank that up to make more money for the gym itself."
Now that she is back, Ms Rennie has no intention of leaving again.
"I'm loving it here, it's a real creative hub, there are world-beaters and people that have achieved great things," she said.
"They're doing it all from Whanganui."