Sarah Paulson’s method acting could very well have some long-term effects on her health.
The 41-year-old actress revealed on Thursday's The Late Show With Stephen Colbert that taking on Marcia Clark’s smoking habits for her role as the famed prosecutor on FX’s The People v. O.J. Simpson: American Crime Story, made her start craving cigarettes.
Paulson, who doesn’t "smoke at all" usually, admitted she started to during production of the program.
"How do you do that?" host Colbert asked.
"I put it in my mouth and I inhale it," she joked, to which Colbert immediately inquired: "You can do it and it doesn't kill you? You can actually get in into your lungs and everything."
"I can," Paulson assured him. "When we first started, I was coughing a lot. Eventually, I was kind of like ... I was ready for a smoke. I was like, 'Hey, hey!' It got me a little crazy for the ciggies. I smoke in American Horror Story and I was shooting them at the same time. It was a real situation."
Paulson, who actually met Clark while researching for the part, admitted she had some negative preconceptions about her.
"She was really considered – and I think I bought this, too, prior to researching the role the way that I did -- She was considered to be a strident, really aggressive attorney," Paulson explained. "If she were a man, these would be positive ways to describe an attorney.”
"No one would talk about his bad suit and his bad hair," she added.
ET caught up with Paulson on Thursday, where she shared her opinions regarding the romance rumors surrounding Clark and fellow prosecutor Christopher Darden. Here what she says in the video below.