Speaking on the show, presenter, Sian Williams, said: “The plan defines an eating window, in this case, eight hours a day.
“Some allow you to eat what you want, this is not the case. It’s also calorie controlled, restricting you to 800 calories a day.”
Dan was required to eat healthy high protein foods such as meats, fish and nuts.
He also tried to beat the bulge by ditching alcohol during the four week diet.