Posted on 16th September 2009 12:00PMEve's training for her new film left her feeling "like an 80-year-old woman".
The rapper-and-actress has been in rigorous training for her role as a "roller derby chick' in new film 'Whip It' - which is about the roller skating contact sport - and she admits it has taken its toll on her body.
She told Women's Health magazine: "I used a lot of Tiger Balm. I felt like an 80-year-old woman!
"But everybody does an evaluation when they turn 30, and I became a lot more body-conscious.
"I want to keep my booty in order. When you're 23, you can lose five pounds in a week because your metabolism is fast.
"I don't want to do unhealthy things to lose weight fast for something like a photo shoot. I do want to feel amazing in my clothes, though."
The 'Let Me Blow Ya Mind' singer - who stars in the movie with Drew Barrymore and Juliette Lewis - also revealed her personal trainer encourages her to train even when she's on tour.
She added: "Working with a trainer is intimate, as it is with a hairdresser. My trainer texts me when I'm away, asking how my training is going, but I'm horrible. It's unfortunate, but I need adult supervision."
However, Eve is in complete control of her diet and makes sure she avoids the more calorific alcoholic drinks.
She added: "I like vodka sodas, which most trainers say is the best thing to have if you're going to drink, because one is only around 70 calories. I don't do the mixed drink thing, but I'll have wine. When I do, I try to cut out the dessert or skip the bread at dinner."
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