Actor Samuel L. Jackson had urged co-star Scarlett Johansson to reduce risky movie stunts to avoid injuries, but she didn't pay heed to it and ended up aching and bruised while filming "Captain America: The Winter Soldier".

Johansson took part in numerous fight scenes on the set of the new superhero movie, and Jackson had advised that she must get a body double for the scenes. But she was adamant about performing them on her own to lend authenticity to the movie, reports contactmusic.com.

She said: "It's important people know that (I do my own stunts). If you just hand over to the experts when the going gets tough, I don't think you are fully embracing the part. I like doing the stunts.

"Oh, sure, it hurts sometimes. I came into work on 'Winter Soldier' some days aching with bruises and bangs, and Samuel L. Jackson, my co-star, would say: 'So why not just hand over that stuff to the experts, Scarlett, and save yourself from pain?'

"I explained to him why I just couldn't do that. Please don't think I'm stupid, though. I know my limitations. When Natasha, my character, has to bound 20 ft in the air and do four cartwheels, it's my stunt double Heidi Moneymaker who's doing that. But that woman hanging 60 feet in the air, taking punches and throwing punches? Well, that's me."