Before landing the part of Emma Frost, January Jones was best known for playing the unhappy housewife Betty Draper in the AMC series "Mad Men." For that show, she was encouraged to not work out to keep her 1960s-era physique. Going straight from shooting "Mad Men" to "X-Men," then, proved to be challenging. "I'm thinking, 'I'm supposed to be doing crunches on the plane,'" Jones told the Los Angeles Times
. "How am I gonna get buff in one day? I'm a petite person, so I didn't want to go into a strict workout and eating regime. I would have disappeared entirely, and she's very busty, very voluptuous, so I didn't want to get rid of any of my curves." The answer reportedly came in the form of raw juice. A lot of it.