Three out of five Operation Transformation leaders keep up the plan after the show whilst two will generally fall back into old habits.
Stalwart fitness expert Karl Henry said the statistics reflects “normal life” but he and his fellow panel of experts provide a care package to help keep them on the right track.
He added: “From recollection the numbers we have are three out of five will keep the results going.
“Obviously that varies from year to year. But the last time we checked I think it was around that.
“I think that reflects normal life. In terms of what we do, it is lifestyle change. It is changing your food and you know, I think that reflects the normal change.”
Over the course of the past two months, viewers have watched on as five leaders showcased their journey to better health and wellbeing.
The group began their transformation in November when they were fully assessed by the experts and underwent the minimum fitness test with Professor Niall Moyna of DCU and his team before entering.
There is just one week until the current season wraps and they travel to the Operation Transformation headquarters in Mullagh in Co Cavan for their final televised “check-in”.
But Karl insists they won’t leave empty handed, and told how they will be kitted out with a care package to stay on track and access to each of the experts, principal clinical psychologist Dr Eddie Murphy, dietitian Aoife Hearne, and general practitioner Dr Sumi Dunne, for whenever they need.
He added: “We do absolutely [stay in touch], we have a care package when the show finishes and we have a follow up care package that we do.
“And then generally I would chat to them during the year at random times.
“They all have my number, they would talk regularly enough through the year.”
“And they all have our numbers for the whole panel if they need to, you know.
“Because we all go through it together. That is the thing.”
It comes after emotional leader Katie was in floods of tears in this week's episode saying she didn't want the "life changing" show to end.
The Dubliner had everyone crying at her check in as she reflected on her "amazing" journey ahead of the finale next week.
The young mum said: "I feel on top of the world but I'm sad it's over.
"I never thought I'd be this person after seven weeks but it's just amazing."'
Karl comforted her with the news that there will be an aftercare package available when the show wraps next week.
Operation Transformation airs Wednesdays on RTE One at 9.35pm.
