Kidman and Rock were discussing things they do to prepare for acting roles.
Her most recent role was playing Grace Fraser opposite Hugh Grant as Jonathan Fraser in HBO thriller “The Undoing.” In the series, Kidman plays a a successful therapist who unfolds incriminating secrets about her husband while he is on trial for the murder of his mistress.
“I would like to be able to say it’s easy, but it’s actually difficult,” Kidman previously told USA TODAY.