Hrithik Roshan challenge to B-Stars!!

Hrithik Roshan is promoting his upcoming film 'Bang Bang' in an innovative way on Twitter by daring Bollywood stars including Shah Rukh Khan, to take on fitness challenges.

The 40-year-old actor, who will be seen in an action hero avatar in the Siddharth Anand-directed film, dared SRK to post a photograph of doing the exercise that helped the 'Chennai Express' star attain his 10-pack abs.

The 10pack #bangbangdare @iamsrk show us a picture of you doing your favourite ab exercise! We all want to know which one it is! You have 3 days! Qabool? Hrithik posted.

For Dino Morea, Hrithik proposed another fitness challenge, saying, To the muscleman Dino Morea your #bangbangdare - 20 parallel bar dips! 1 set!! You have 3 days!! Do you accept?

Hrithik also dared his 'Dhoom 2' co-star Uday Chopra. I'm taking this forward - my #bangbangdare to Uday Chopra - 100 body weight pull ups (in 5 sets)! You game? You have 5 days! Time starts now!! While congratulating Sonam Kapoor on the success of her latest film 'Khoobsurat', the 'Krrish 3' star asked the actress to post a collage of her smiles.

My #bangbangdare to khoobsurat Sonam Kapoor. A collection of your happiest craziest smiles on the super success of 'Khoobsurat'! This one we deserve, he posted.