In December, Guardiola admitted that he has been "sleeping badly" and "doesn't digest his food well" during City's poor run of form.
He said after their draw with Feyenoord: “The nails, yes, I did them on my nose. I am a person who is nervous sometimes. I have bad days, I mess up a lot, and rudeness makes me nervous. Do I lose my mind sometimes? Yes. I sleep badly and I don’t digest food well. I always have to eat light. Only soup in the evening."