London, March 15 : Laurence Fox has sleepless nights to thank for improving his performances in the new run of British drama series `Lewis'.

The 30-year-old hubby of Billie Piper revealed that it was an indirect doing of his four-and-a-half month son Winston that he became a better actor.

"There were some real sleepless nights, and there still are but in a funny way your performance can get a bit better if you don't sleep," the Daily Express quoted him as saying.

"You don't make as much effort so you come across as more natural, I suppose.

"I had no life other than work or sleep for six weeks but we got through it and that's all that matters. I missed him, I wanted to be at home with my son," he added. (ANI)