It's always the way - you go back to work after a holiday and you get ill. This doesn't change if you become famous, as Will Young is finding out.
As he hits the promotional trail for his new single Switch It On, and the accompanying album Keep On, he's been struck down with tonsillitis.
"Last week I was talking like a frog," he says grumpily. "And even then they wanted me to do interviews. 'Do you think you'll still be able to do it, babe?' Don't think so. It was dreadful."
Much of 2005 hasn't been a holiday - the 26-year-old has been working on Keep On with producer Steve Lipson, with whom he collaborated on his previous album, Friday's Child, and various other musicians, including respected producer Nitin Sawhney.
But Will says he enjoyed recording this album, and that it gave him a chance to have much more of a personal life than he's had since his career took off four years ago, when he won Pop Idol.
"This year's been one of the best years, I would say, of my life," he enthuses. "I've really enjoyed working on Keep On, and I've really enjoyed living in London. I've gone out a lot more than I did last year. I made a conscious effort.
"I became the man that would accept every invite because before I never accepted these things. I would just be like, why would I want to go to that? I don't know any of these people. But that completely changed," he laughs. "I was like, fabulous, free drinks!"
He also went to Zimbabwe and Malawi at the beginning of the year, taking some time out after having done three tours in support of Friday's Child (he went on to do more live dates this summer), and filming his first film role in the forthcoming Mrs Henderson Presents, alongside Dame Judi Dench and Bob Hoskins.
"The film was a great experience," says Will. "It was nice to have two months out of the music industry. I wasn't that important and I got into this routine of getting up really early, and not being allowed to be late, which is the worse thing you can do. I was late once, and I will never be late again.
"I didn't get told off, but I did get some advice from Judi Dench on the subject of being late. She's very lovely but she made her point. She said in all of her career she's been late once. I took that on board. Everyone was really kind actually, but it was a really bad deal."
Will says he chose Africa as a holiday destination because he's been in love with the place since he was a child.
"The first time I went there I was about 11 and I cried for weeks when I got back," he says. "I really missed it."
But you get the sense he chose that particular continent because - apart from South Africa where he's had some success - he doesn't get recognised there.
"I suppose I do pick places for that reason," he concedes. "It makes it easier. I can relax more because I don't feel like I'm on show so much. It's a good thing, I think, for me to do that. It gives me time to properly be myself, I guess."
Will has said before that he sometimes regrets his fame.
"I am very envious of my friends' anonymity, but I don't complain about it too much. I have masses of perks in my life. But I do quite miss not being famous, but I can get that elsewhere so it's fine. I have to be careful. I don't want to be one of those moaning people who go, 'Oh being famous is so awful'.
"I could talk about being famous for days because I do find it a fascinating subject. I think people underestimate the role it plays in our society. It's a form of control - you can tell people what to wear through celebrity, what music to listen to, what way to be, what way not to be. I think what's been going on with Kate Moss at the moment is a perfect example."
Will is quick to point out that he doesn't see himself in the same league as Kate Moss, or Posh and Becks, another example he gives. But the fact remains that he does get written about a lot.
"I don't know why that is," he says. "But I don't read it so it's fine. I hear about it from other people. It's horrendous, and it's probably all ridiculous. It is actually also quite funny. You have to have a sense of humour about it."
Much of the speculation is to do with Will's love life. What actually goes on in that area of his life is probably only known to him and those close to him, and will remain so - although he tells me he's single, and happily so.
But in the past two years he's been linked to a number of men, including a mystery footballer or two, as well as designer Matthew Williamson.
"For some reason they think I'm into sportsmen," laughs Will. " Designers as well. I love it. It's like they pick a profession that week and I'm going out with someone from that profession. It'll be hairdressers next.
"Have I ever dated a footballer? No. They just do it when they think someone else is gay. They go, 'I know what we'll do, we'll make them go out with Will Young'. Why don't they make them go out with George Michael? It makes my personal life sound way more exciting than it is."
But Will's celebrity is only set to get bigger. He's already wellestablished as one of the UK's most popular male singers, competing with only Daniel Bedingfield for second place behind Robbie Williams.
But with his strongest album to date, which has the potential to exceed the 1.6 million sales of Friday's Child, and his performance in forthcoming film Mrs Henderson Presents, which is already getting rave reviews, he could easily be challenging Robbie for pole position over the next year.
"I feel like I'm in it for the long run," says Will, "There's nothing I'd rather be doing. I mean the acting's great, and maybe that will lead to bigger things. But I wouldn't want to do anything else right now."
* Will Young's new single Switch It On is out now. His new album Keep On is out today. Mrs Henderson Presents opens on Friday