The youngest ever leader on Operation Transformation is determined to get a grip on his weight and get back to playing GAA.
Alan Mullen (21) became the youngest participant on the RTE programme when he and four others were selected out of 19 finalists to take part in the series.
The young man from Moate, Co Westmeath has said that he finally wants to get control of his weight which has increased since his teens.
"Every year I seemed to be putting on a stone, and when I was a teenager it was two stone a year. I'd like to get out playing more sport again, get back to GAA," he said.
Alan, who weighs 26 stone, also revealed last month how a cruel bet that said he would be dead by Christmas made him sign up for this year's programme.
Alan will now battle it out with four other hopefuls to reshape his diet with the help of four experts.
Trainer Karl Henry, GP Dr Ciara Kelly, clinical psychologist Dr Eddie Murphy and dietician Aoife Hearne will help get the contestants into shape.
Also among the hopefuls is 34-year-old Louise Ormsby (pictured inset) from Adamstown in Co Dublin, whose push for a baby is her inspiration for wanting to lose weight.
"My weight is a factor and I won't be given medication or start any treatment until I lose weight, so that spurred me on to change" she said.
"I also have unusually high blood pressure, which I hope will come down with the weight" she told TV Now Magazine.
Father-of-five Mark McArdle from Dunleer in Co Louth is also looking to drop weight from his 22 stone body and feels it's finally time to tackle it while he can.
"I suppose I'm getting to the age when you start becoming concerned about health issues and I think that if I don't tackle the weight now, it will get harder and harder as I get older," he said.
Other hopefuls Veronica Horgan (24) from Dunmanway in Co Cork and Eilish Kavanagh (47) from Bunclody Co Wexford are also hoping to shed their weight for family members, for Veronica's sister and for Eilish's daughter's wedding.