Gary Barlow has admitted he is unsure if he will remain in 'The X Factor'.
The Take That has been a huge hit with viewers since he took over from as head judge from show supremo Simon Cowell but Gary revealed the demands of the job along with sleepless nights worrying about his acts, has led him to consider quitting the ITV1 programme next year.
He told Daily Star Sunday: "I've had lots of sleepless nights and my stubble is going grey.
"Don't get me wrong, I've really enjoyed it and if I was asked back next year, I would definitely consider it. But it has been ten times more work than I thought it was going to be. I didn't book anything in my diary for the rest of the year and thank God because I haven't got the energy to do anything else.
"When I get to Monday morning I'm completely drained."
However, Gary, 40, has been getting advice from Simon Cowell, who he calls a "massive inspiration".
He said: "Simon normally rings me morning my time because he's in LA. As someone who always wants to learn, it's brilliant to hear from the executive producer of the show.
"I'm here because I like the challenge. I want to be the best at this, I learn so much from half an hour on the phone with Simon."