Teen sensation Justin Bieber has revealed that his hectic schedule has finally got the better of him as his "body finally broke down" over the weekend.

Writing to his 27.9 million followers on social networking site Twitter in the early hours of this morning (September 17), the 'As Long As You Love Me' superstar explained that he's feeling very run down and is having to take time out to "chill":

"All the travel and the body finally broke down. Soo sick. Just gonna chill. #nofun"

He also shared a photograph with his fans a few days ago, in which he can be seen with his head in his hands looking rather dejected. He also spent time last night (September 16) retweeting messages from his online fan base and told them his new tour will be his best yet:

"#BELIEVEtour is gonna change the game. im hitting every city. doing interviews. hitting the stage. WE READY!"

Watch Bieber's latest music video in full here: