A year after keeping himself away from smoking, Aamir Khan return to smoking due to nervousness.

As per our sources, the actor who quit smoking initially this year in January, has lately given in to the habit, courtesy pre-release nervousness for his film 'Dangal'.

Before every release Aamir gets very nervous and starts smoking. It had happened during 'PK', 'Dhoom 3' and 'Talaash' as well. Now that he has got in to the pre-release phase his nervousness has been growing.

What's admiring here is that Aamir's son Azad doesn't like his father smoking. So Aamir is just not allowed to smoke when anywhere close to Azad.

'Dangal' is a very special film for Aamir. Giving in his 100%, he has also gone through extreme body transformation for the role of ex-wrestler Mahavir Singh Phogat.

Directed by Nitesh Tiwari, Dangal` is based on the life of wrestler Mahavir Singh Phogat, who trained his daughters to make it big in the field of wrestling. Produced by Aamir Khan, Kiran Rao and co-produced by Siddharth Roy Kapur, Dangal` releases on December 23, 2016.