Gary Barlow is struggling with rehearsals for the energetic dance routines required for the Take That reunion tour.

With just four weeks to go until the first gig, the singer is now facing a race against time to get in shape so that he can keep up with the rest of the group.

A source told The People, "Gary had let himself go a bit over the past 10 years and has found it a lot tougher than he originally thought. Everyone is keeping their fingers crossed he'll get there - but time is running out."