Los Angeles, July 11 : Actress Vanessa Kirby had to raise her game to compete with Hollywood star Tom Cruise during the filming of 'Mission: Impossible - Fallout' and the upcoming film 'Mission: Impossible - Dead Reckoning Part One'.

Vanessa, 35, reprises her role as arms dealer the White Widow in 'Mission: Impossible - Dead Reckoning Part One', out this week. And she joked: "Tom is the best runner in the world, so if you are suddenly asked to run next to him, you can't be flagging behind like I was at sports day at school. You have to really step up and be ready. But the physical aspect of the role is a very beautiful gift because you have to learn about your physicality. That is something I didn't have before."