Robbie Williams stays quiet about `embarrassing` mystery illness

The 36-year-old singer has just reunited with man-band Take That. He admitted that he was physically ill whilst plugging Reality Killed The Video Star, but kept it a secret because he doesn't want people to laugh.

He told The Sun, 'I had something that made me tired all the time, not as serious as ME.

'The reason I'm being guarded about it is because if I told you, people would go, 'Ha, ha.'

'But it really f****** affected me.'

The cameras were called in to capture the reunion between Robbie and his band mates, who he parted ways with in 1995.

In a move that angered dancer Jason Orange, Gary Barlow arranged for crews to film the recording of their new album, Progress.

According to the UK newspaper, he said, 'I wanted to enjoy Rob. I wanted to enjoy the reunion privately.

'I didn't want me or any of us to be acting differently when there are cameras on.

'I didn't want it to be captured on cameras, but it was. Gutted.'