Sarah Jessica Parker is no stranger to the pressure to be fit that Hollywood puts on actresses. Back when she was 27, "I was about to do Honeymoon in Vegas and before that I was off to do another movie in Iowa," Parker said yesterday on a SiriusXM Radio show, according to People. "The producer of Honeymoon in Vegas was very concerned about me being fit for Honeymoon in Vegas. So they sent a treadmill to Iowa." Her song of choice: C+C Music Factory's "Everybody Dance Now." "I would very diligently go out every single day and run like a lunatic to this song. And then when I went to Iowa, on the treadmill, I would continue to run like a lunatic to the song," she said. "And then we went to Vegas and I had a treadmill also in my room and I would get up every morning and run." (More Sarah Jessica Parker stories.)