LONDON: Madonna is a fitness freak but it seems age is finally taking a toll on the pop star who collapsed twice on stage during her Sticky & Sweet tour in Sofia, Bulgaria.

According to thesun.co.uk, the singer lost consciousness singing Holiday and had to be held up by a dancer. Then, as she left the stage during Spanish Lesson, she passed out and fell over.

“Madge (Madonna) was really worried backstage. She had to sit down for a longer break than usual between songs. She refused to end the show or take a break after the Holiday dizzy spell. It turns out she’s suffering from exhaustion. She is anaemic. She was advised to postpone the last two shows in

Israel for a few days, but logistics and stubbornness stopped her. She’ll do

them then take some rest,” said a source.