JB battled through a mystery illness to perform a show on Wednesday night (04Aug10) - then thanked fans for inspiring him to finish the concert.
The Baby hitmaker suddenly felt unwell midway through a gig in Orlando, Florida and aides advised him to quit his set early.
But the singer bravely soldiered on - and after departing the stage he took to his page on microblogging website Twitter.com to thank supporters for helping him through the show.
He writes, "Orlando that was a crazy night... I actually got sick in the middle of the show and they wanted to cancel but the show must go on and the fans gave me my second wind... So thank u to everyone for being so incredible tonight."