Ranbir Kapoor performs Krav Maga in 'Roy'

Bollywood's Gen-Y is indeed the hardworking one. They no more feel the need of a body double to perform stunts for them, neither do they hesitate from going behind the extra efforts to get a scene right on the screen.

During her 'Dhoom 3' days, Katrina Kaif learned gymnastic to get her moves right in the "Kamali" song. And now her alleged boyfriend Ranbir Kapoor took up Krav Maga, self-defense form, to film a climax sequence in his next film 'Roy'.

Krav Maga is a self defense form mostly used by Israeli military men. Ranbir learnt it, along with Katrina so that they could use it again on-screen while performing the high-octane action sequences of 'Jagga Jasoos'.

Directed by Vikramjit Singh, 'Roy' will hit the theatres in February 2015.