My little boy, he had leftover Thai green curry for breakfast yesterday,” says Joe Wicks, 40, deadly serious. “It had baby corn, mangetout, chicken, not even any rice, it was just the actual curry, ...

There was a time, not so long ago, when Joe Wicks belonged to the nation. He was in living rooms at 9am, barking burpees at children while frazzled parents tried to remember how to lunge. “The ...