Spanish actress Penelope Cruz finds acting in English movies difficult because she has to constantly think about dialogues.
"There is a part of your brain that has to stop when you are acting. You have to be in the moment and dare to fly. Words can't be on your mind," femalefirst.co.uk quoted Cruz as saying.
"And yet, when you are working in a foreign language, you have to be thinking about the words every single second. It's difficult, but I am not complaining. It's just the way it is," said the 38-year-old, who has an 18-month-old son Leo with husband actor Javier Bardem.
She also revealed that she and Bardem had to adapt their own scripts in "Vicky Cristina Barcelona" as director Woody Allen wanted them to speak Spanish, though he can't speak the language himself.
"He gave us the script he wrote in English, and he gave us the freedom to translate and improvise. Woody told me recently that he still doesn't know if we are talking about the atomic bomb," she said.