Rishi Sunak scoffed a chicken Milanese and second pastry after breaking a weekly 36-hour fast today.
The Prime Minister typically does not eat on a Monday, snacking only on “the odd nut”.
He said he uses intermittent fasting as a “reset” and a “detox” after an “indulgent weekend”.
Speaking to ITV’s This Morning hosts Rylan Clark and Rochelle Humes, Mr Sunak said: “I wish I was as disciplined as has been reported, is the first thing to say.
“So, like all of us, I start the week with the best of intentions, and then you hit contact with reality at some point.
“I try on a Monday, after an indulgent weekend, to try and have a day of fasting.
“It’s not totally nothing but largely nothing. I do have the odd nut, that kind of thing.
“I start with the best of intentions… we all do, right? And then things happen.”
He added: “My problem is I love sugary things. I eat a lot of sugary pastries, and all the rest of it, the rest of the week. And I like my food.
“I don’t exercise as much as I used to because of the job. So a little reset at the beginning of the week, a little detox.”
Mr Sunak used his appearance on the program to bat away questions over the lack of GP appointments and when the election will come.
He repeated only that it would most likely be in the second half of the year.
But he did credit the food with making him feel confident about winning, joking: “I’ve been fueled by the chicken from This Morning.”
The Italian dish is made with thin chicken breasts or cutlets, lightly breaded and pan-fried for a deliciously crispy taste.
It was being prepared as part of a cooking segment on the show before Mr Sunak’s appearance for an interview.
He tucked into the dish quickly before joining the hosts on the couch to discuss a ban on disposable vapes.
The Prime Minister also told striking doctors that “we don’t have a magic money tree” as medics prepare to restart negotiations with ministers.
Junior doctors in England are to meet with the Government this week with a view to end the bitter dispute over pay.
Speaking ahead of the meeting, Rishi Sunak said “it is disappointing” that junior doctors “said no” to an offer of an “on average 10 per cent pay rise”.
“We don’t have a magic money tree. And we have to be fair to everybody.”
When it was put to him that resolving the pay dispute would boost his chances in the election, Mr Sunak said: “My job is to do what’s right in the country in the long term.”
Talks between the Government and junior doctors broke down last year.
