As if anyone needed more proof that Jennifer Lawrence is tough as nails, check out this EW exclusive clip from the special features of the Blu-ray/DVD of The Hunger Games, where viewers can take a behind-the-scenes look at how Lawrence trained for Katniss, and why the crew made her her own climbing gym.
Inside scoop: The knots on the tree in her training gym became the same as the ones in the movie so Lawrence could accurately practice her climb – complete with a harness, of course.
Watch Lawrence show her strength below:
The Hunger Games is on DVD and Blu-ray August 18.
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