Sandra Bullock says becoming a mother has made her think twice about doing her own film stunts.

The Heat actress loves getting physical in her films, but isn't as tempted to put herself at risk since adopting her three-year-old son Louis. "I insist on doing my stunts all the time. But one thing that makes you reconsider doing your shot is having a child. You go, what if I should fall and die on this one? Would that be a smart move?" she said at the London premiere of her new film.

The 48-year-old star said there are some "dangerous" stunts in her new action-comedy film, in which she co-stars with Melissa McCarthy, but the actresses decided to leave them to the professionals. "We didn't have crazy stuff to do. There were a couple of dangerous things and Melissa and I were like, 'Let the stunt people do it,' because the explosives were falling on them. We went and had coffee while people risked their lives," she quipped.

The proud mum admits her career ambitions, including starring in a West End play or musical, have taken a backseat since she embraced motherhood, but she is blissfully "happy" being a normal parent who takes her son to school: "The thing I like about my life is the school runs. I want to be there for every school project, every school run, and everything else. When you're doing theatre, the commitment is so great. I say 'never say never,' but right now I'm so happy in this world that I'm living in."

Sandra hasn't ruled out becoming a stage star, however. "In the future when he hates me and doesn't want me around, I might be coming to [London's] West End [theatre district]!" she joked.