In tonight's episode of Operation Transformation the leaders take on their first group challenge with the help of the Dublin Fire Brigade.
With all three leaders successfully losing weight last night, the pressure is on for Mark and Veronica, will their new regime pay off on the scales tonight?
And it's time for the first group challenge with the Dublin Fire Brigade. It's a physically draining task and for some of the group it is particularly fearful. Will they complete the challenge? Tune into RTÉ One tonight at 8.30pm to find out.