American trainer brought down to work on Khan's body for 'Dhoom 3'

Aamir Khan's recent appearance at an event where he flexed his muscles during a game of badminton was a clear indication that the star has already started preparing for Dhoom 3.

Mr Perfectionist has an American trainer David who has been flown in from California to get the star in the required shape for the action adventure's third sequel.

The trainer specialises in spinning as a fitness regime and also been showcasing his skills to the public in Mumbai.

Though the makers of the film and Aamir are extremely guarded about divulging details about the project beforehand, a source states, "David has been in Mumbai for a while and has been put up at a place near Carter Road. He has been given the task to get Aamir in kicking shape for the film."

Apparently in the last few days because of the birth of his son, Azad, on December 1, Aamir has been tied up but he will soon resume his workouts with David.

There has been a great deal of speculation about Aamir's character in the film that has him paired with Katrina Kaif.

The buzz has been varied from him being a gymnast to a ballet dancer to him learning parkour to make his body agile. But the names associated with the project prefer to be silent on the front.

Apparently his co-stars Abhishek Bachchan and Uday Chopra will begin shooting for the action flick in March while Aamir will begin shooting only in June after Talaash, his film with Reema Kagti releases.

For his earlier flicks like Ghajini and 3 Idiots, Aamir had bulked up and shed weight respectively.