NO-nonsense nutritionist Dr Eva Orsmond got down and dirty in Ireland's toughest race over the weekend.
The 10km Hell And Back run, which takes place on the Kilruddery estate in Bray overlooking Dublin Bay, requires participants to wade through obstacles including barbed wire, ponds, rivers and swamps.
"It was my second year doing it and it was great fun," Dr Eva told the Herald.
"The weather was fantastic so we were very lucky.
"I do run a bit myself and I wasn't that keen to do it this year, but my son found out and wanted to do it."
It took Eva just under two hours to complete the challenge, which saw her crawling through a pool of mud.
"We had to go under barbed wire, which was quite tough.
"When we got to the last 2km I thought it was all over, but then we had to crawl under these things in the mud, run 200m and then we had another two obstacles to get through."
Although the weekend challenge was tough, the doctor felt it was good to do something while the Operation Transformation leaders were slugging it out on their weekly army challenge.
"Obviously Sunday is the day that the leaders usually do the army challenge, so I felt like I was doing my part as well.
"I felt like I was keeping the training going," said Eva who is looking forward to getting back to filming with Operation Transformation today.
And running is something which suits Eva's personality, says the doctor, who has clinics in Dublin, Kildare, Limerick and Galway and Kilkenny.
"Because I'm hyperactive walking is not my thing -- I like to something you can get a little more value from, so running is something I like," she added.
Eva completed the challenge with her son Evan and his friend Dekki who were delighted to cross the finish line, although they were already feeling the effects of the tough task.
"I managed to get the boys to run as well and they play rugby so it is good for their training.
"We were very, very muddy after it, but when we showered and relaxed, we were delighted that we finished it," she added.
Dr Eva can be seen on the RTE one show dishing out diet advice every week and she frequently visits the leaders to see how they are coping with their new healthy eating regime.
"The show is going great, we're filming tomorrow and I'm hoping to build up to the fun run in the Phoenix Park next month," added the doctor.