American actress Liv Tyler secretly enjoys smoking despite recognising the serious health implications associated with the habit. The 29-year-old, who gave birth to son Milo in 2004, says she restarted the bad habit after a film role required she smoke. Tyler says, "I'm afraid I smoke sometimes, "I did give up for a long time when I had Milo, but on my last film my character smoked and that was bad for me. I don't like it, but I secretly love it. I know it's terrible."