"When Linda entered the one-year comprehensive performance program, she was a 61-year-old, out-of-shape female in need of body composition adjustment," Shilstone wrote for Deadline. "That’s not an insult: it’s not unlike hundreds of similar women of the same age and stage in life. Post-menopausal women tend to accrue more visceral abdominal fat, and this places them at risk of Type 2 diabetes, and cardiovascular disease. While many women don’t realise this, women in this age group have the same cardiovascular risk as a man – the result of changes in their oestrogen-dominant hormone system."
Her typical day on a plate involved egg whites, veggies, fresh berries and low fat yoghurt for breakfast, lean protein, grilled veggies and brown rice or sweet potato for lunch and lunch. She also added healthy fats like avocado, olive oil and nuts to her dishes.
For the first three months, Hamilton worked out six days per week involving up to two hours of circuit training exercises.
"Then, core training using a stability ball, steady state and interval cardio training on an elliptical device, power training with a specially-designed medicine ball. All this with specialised pre-habilitation (injury prevention) exercises based on her bio-mechanical analysis."
Plus Hamilton had two morning and arvo sessions on the elliptical lasting 45 minutes.
"In the final nine months, Linda’s training became more functional to what would be required of her Sarah Connor character in the film," he continued. "We moved to a high school football field. The purpose was to emphasise footwork. That encompasses short sprints, agility drills, and combat training. No way we were going to let a stunt double take her place. Or worse, put her in the position to get pushed around by a younger adversary."
This regimine is hardly new for Hamilton, back in the day she worked out three hours a day for six days a week while filming the second Terminator film, and could bench press 40 kilograms for those renowned "Linda Hamilton arms".