Mumbai, Sep 20 (IANS): Fit as a fiddle Hrithik Roshan has thrown up "Bang Bang" dares to Bollywood celebrities like Shah Rukh Khan and Sonam Kapoor, as part of an innovative promotional strategy for his forthcoming film.

Hrithik, who has performed daredevilry for his movie, was active on Twitter Saturday and he reached out to the celebrities via the social networking platform.

To SRK, he tweeted: "The 10pack #bangbangdare @iamsrk show us a pic doing ur fav ab exercise! All want 2 know which 1 it is! U hv 3 days! Qabool?"

The 40-year-old also wrote to his "Dhoom 2" co-actor Uday Chopra, saying: "I'm taking this forward - my #bangbangdare to @udaychopra - 100 body weight pull ups (in 5 sets)!! U game ? U have 5 days! Time starts now!!"

Among the actresses, Hrithik chose the "Khoobsurat" star Sonam Kapoor.

"My #bangbangdare 2 khoobsoorat @sonamakapoor A collection of ur happiest craziest smiles on dsuper success of khoobsoorat!! Dis 1we deserve," he posted.

Hrithik also directed a tweet to model-turned-actor Dino Morea, and wrote: "To d muscleman @DinoMorea9 your #bangbangdare - 20 parallel bar dips! 1 set!! U have 3 days!! Do u accept?"

The actor's celebrity photographer friend Dabboo Ratnani was not left behind either.

"This ones going to b fun!! My #bangbangdare to my friend @dabbooratnani - 100skips one go!! U have 2 days! Accepted?"

Hrithik even dared the smokers among his Twitter followers.

"Now d ultimate #bangbangdare 2 al d smokers out der! No smoking for 3 days. dats d time it takes nicotine to exit your system! DO IT," he tweeted.

"Bang Bang", which also stars Katrina Kaif, will hit the screens Oct 2.