In order to increase her endurance, Emily Blunt worked tirelessly on her cardio. Her trainer for "Edge of Tomorrow," Jason Walsh, shared with Women's Health, "We worked to make sure she had mobility in her joints, and then flexibility and base strength. Once her body was resilient and strong enough, and she had a lot of endurance, I took her out to the UCLA track to really condition her. She did tons and tons of sprints up [the] stairs."
Once Blunt's endurance was good enough, Walsh began adding pounds to the actress with a weighted vest. However, it was important to not start off with 60 pounds — instead, Walsh started with 10 pounds before gradually moving up the ladder. Once Blunt was ready, they moved up to 20 pounds, and continued to climb at 10-pound intervals.
Walsh argues that training is all about challenging yourself to find enjoyment — even when it's hard. And that's the secret sauce that makes training so powerful, especially for a role like Rita in "Edge of Tomorrow." For Walsh, it's a good thing when strenuous workouts become habitual. By then, you're at a place where you can really push yourself. According to the trainer, "That's when it becomes fun."
