Rosamund Pike, the film’s star, was nominated for Best Actress for her portrayal of Amy Dunne, who is beautiful, intelligent and seemingly innocent; until we learn she is actually a ruthless psychopath taking revenge for her husband’s infidelity by framing her own murder.
In the famous shower scene at the end of the film, jaws dropped as Rosamund slipped off her dress and revealed an envious body with incredible muscle definition.
In fact, Rosamund had to undergo four cycles of weight gain and loss to suit the sequence of filming.
Now, her personal trainer - professional fighter Holly Lawson, explains to how Rosamund achieved such a toned physique...
Different weights for different scenes
When Amy Dunne runs off in Gone Girl, she packs on a few pounds as part of her disguise, only to return with a killer bob haircut and an even more killer body.
The film, which was shot out of sequence, required Rosamund to put on almost a stone and a half (9kg) and shed it over and over again so her body was in synch with her character’s, Healthista reports.
It’s an understatement to say that her trainer - Mixed Martial Arts (MMA) fighter Holly Lawson - knows a thing or two about training for muscle gain and weight loss, since fighters constantly have to gain or lose weight rapidly to stay in a particular weight class.
Rosamund was forced to gain 20 lbs (9kg) in two and a half weeks during Gone Girl, and then lose 15 lbs (6.8kg) in ten days. She put on the weight through lifting heavy weights and then eating carbs to gain fat
In order to lose more than a stone for the final scenes of Gone Girl, Rosamund ate only protein, fat and vegetables, as well as carrying out twice daily plyometrics - resistance moves using body weight
This made Lawson the perfect person to train Rosamund and keep her at the appropriate weight for filming.
‘What I did was employ a lot of the stuff I learned from fighting into the training with Rosamund,’ Ms Lawson told Healthista journalist Nicola Dall'Asen.
‘I know how far you can push the body and I knew how to bulk her up with water weight and later strip it out.’
Ms Lawson took Rosamund through four separate training cycles, to gain weight twice and to lose weight twice.
The two different goals made for two very different diet and exercise regimes.
When Ms Lawson was hired she had a mere two and a half weeks to help Rosamund gain 20lbs (9kg), but made sure that there a solid muscle foundation underneath the weight gain.
‘I put a lot of lean muscle on her, then some fat on top so when she leaned out she looked really good,’ Ms Lawson said.
She put on 8lbs (3.6kg) of lean muscle, to be exact.
To get there as fast as possible, Ms Lawson had Pike lifting the heaviest weights possible.
The workout was a basic weight lifting regime: squats, deadlifts, lunges, curls and other simple moves — but Rosamund was maxing out (that’s lifting as much as is physically possible for you) in eight repetitions.
That built a base of muscle that later became the reason for Pike’s incredible definition in the film’s ending scenes.
Rosamund is no stranger to weight loss, showcasing her trim body following the birth of her second son, Atom, in December 2014. She is pictured while pregnant with Atom (left) and after giving birth (right), attending the Golden Globes in Beverly Hills.
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