Pop star Justin Bieber is recovering after feeling woozy during his concert at London's O2 arena Thursday night.
The 19-year-old's manager says he had to take a break and got treated with oxygen backstage before finishing the concert.
Afterward, he was taken to a London hospital as a precautionary measure.
On Instagram, Bieber posted a photo of himself shirtless, apparently lounging in a hospital room with a pair of headphones on.
Bieber also took to his official Twitter account to thank fans for sticking with him.
His rep says Bieber was just exhausted from a long week.