Gary Barlow's back out, doesn't back out

That Comic Relief big mountain climb is getting closer, and out-of-condition celebrities are stepping up their preparations. So much so that Gary Barlow has managed to hurt his back:

A statement on the band's website says that, due to a "hectic training schedule... the muscles in Gary Barlow's back have gone into spasm".

It adds that the singer has been "treated appropriately" and should be able to complete the charity climb.

"It was funny" said a witness, "he was clambering up a wall and doing great, and then someone just shouted 'bet you can't wait until you're sharing a small tent with Gordon Smart' and he just started twitching..."