Saif works out with Halkat Jawani in the background, says Kareena

ActressKareena Kapoorhas revealed that beau, actor Saif Ali Khanreally enjoys her upcoming filmHeroine'speppyitem numberHalkat jawani. The beauty says the actor even works outwith thesong playingin the background."He(Saif) is very excited (aboutHeroine). He liked the first promo, everyone has been talking about the dialogues, but he is very supportive. He actually runs on the treadmill with the song (Halkat jawani) on, so I am making him run and lose some weight," the 31-year-oldspokeatthe launch ofHeroine’stitle track.Heroine,directed by Madhur Bhandarkar,releases September 21.