I’m A Celebrity 2019 weight loss: What effect has the diet had on celebs?

With a diet consisting of such few calories, it's no wonder the celebs were feeling rather sluggish.

In fact, Express.co.uk spoke with Owner and Coach of Oxfordshire-based fitness company BSC Fitness, Rhys Jenkins, to find out just how this calorie deficit can affect the celebs.

Jenkins said: "The clear effect would be fat loss as the caloric deficit would be so extreme. (There'd also be) a lack of energy, increased hunger and a decrease in satiety (feeling of fullness)."

He also revealed how unsustainable this kind of diet would be in the real world when the celebs leave the jungle.

When asked if they could keep up the diet, Jenkins said: "Such a drastic deficit, in my opinion, no."