Shah Rukh Khan kept his promise that he had made to Farah Khan for her latest film Om Shanti Om.

Farah wanted Shah Rukh Khan to take off his shirt for a sequence in Main Hoon Na but Shah Rukh could not work out due to his bad back.

In any case, he did take off his shirt for Dard-E-Disco. Reportedly, Shah Rukh Khan used to pump up his muscles on the sets of Om Shanti Om. Particularly, during the making of the song, SRK worked really hard to get the perfect physique.