Ranbir Kapoor has behaved very professional in all this time. He had to shoot for the promotional track of Wake Up Sid and promote the film within four days only as his 45 day schedule for Prakash Jha's Rajniti was about to begin immediately.

So, to finish his work for Wake Up Sid, Ranbir worked nonstop for four days with hardly three-four hours of sleep.

Ranbir would come to work everyday at 6pm, shoot all night and go home at 7am after which he was busy with promotional activities.

And all through this time, he shot very sportingly. Not once did he complain about anything. He shot for the video, dubbed for some of the parts and went about with the TV interviews, magazine cover shoots, etc.

Well, hope that Ranbir gets to rest for sometime after his grueling shoot