Fitness guru Jillian Michaels gives exercise instructions while promoting her new workout for the Curves franchise in New York January 15, 2014.
Fitness guru Jillian Michaels gives exercise instructions while promoting her new workout for the Curves franchise in New York January 15, 2014. As Jillian Michaels, the tough-love trainer on NBC's hit reality show "The Biggest Loser," lunges towards her middle years she infuses her fitness routine with the same take-no-prisoners mindset that impels her TV contestants to shape up. Reuters/Lucas Jackson

Tiffiny Hall got to live the life of contestants on “The Biggest Loser Australia” for a week with the Hailwood clan in Western Australia. During her stay with the contestants, which consist of sisters Sylvia, 28, Kayla ,24, Sam, 26 and Sam’s boyfriend, Cliff, 26, she ate whatever they consumed and did not indulge in any form of exercise. Now, the former Gladiator and fitness trainer has relived the experience as she talks about looking like she was pregnant and having skin rashes from adapting to their unhealthy lifestyle.

According to News.com.au, Hall’s return to host the Channel 10 show includes a weeklong stay with a “Biggest Loser” family to learn about their eating and lifestyle habits. However, the 30-year-old did not come prepared for the changes of the dining and living conditions brought by the Hailwood clan to her body and overall mood.

“I couldn’t sleep, my mood was low, I was like, ‘this is a nightmare.’ No wonder they don’t feel like training or being active, because with the food they eat, they can’t! It’s poison,” she said. Adapting to the eating habits of the Hailwood clan had also reportedly given her “acne rashes” and a bulging stomach that made her look like she was four months pregnant.

“My skin broke out, I had a rash of acne and by day two I had the worst hormonal acne, so it just shows you’re living on preservatives and chemicals and sugar and I was ravenous,” Hall added, according to the News.com.au report.

The “Biggest Loser” trainer recalled how she had to eat whatever the family ate, including a family-sized pizza, chicken wings, burger and fries. Hall said they also didn’t consume water, only her “poison” drink - soft drink.

The super fit Hall said in the report that it’s not surprising that the Hailwood family don’t realise how much they’ve already eaten since they don’t portion their food. Instead, they eat straight out of a shared platter.

“They didn’t just bake a chocolate cake in a normal tin and then serve the cake up for dessert, they baked it in a casserole dish and then they would put the dish on their lap, put a litre of ice cream on top of the chocolate cake in the dish and then just eat it out of the dish,” Hall recalled.

The 30-year-old also remembered the psychological effect of not eating healthy during her one week stay with the Hailwood family. Hall said that even if she was allowed to train the family during her stay, she wouldn’t have been able to. She said she was always so bloated that she didn’t have the energy or drive to exercise.

However, Halls' stay with the family gave her a new perspective on what needed to be done first for them to emerge as winners in the new series of the “Biggest Loser.” She believes having a complete pantry and kitchen overhaul is the first step, followed by a change in how the family view food as an addiction as their way of connecting with one another.

Despite the “nightmare” week she had with the Hailwood clan, Hall seems eager to get back to hosting “The Biggest Loser Australia” and help the family achieve their goal to lose weight. Hall shared an Instagram photo to welcome the family to the new series of the show, which will start on Sept. 13.

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