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(MORE: 6 superhero-inspired moves to train like 'Captain Marvel' star Brie Larson)

Tighe played nearly every sport as a child, from soccer to basketball and swimming. She said she decided at an early age that a prosthetic arm \"wasn't something that I needed.\"

\"My parents were really wonderful in providing me with all the top prosthetics when I was younger,\" she said. \"They recently told me that they got me this top of the line prosthetic and I would go to school and hang up my coat and my arm.\"

\"PHOTO:
Courtesy Amanda Tighe
PHOTO: Amanda Tighe is pictured as a child in this undated family photo.
>

Tighe instead sees doing everything -- including working out -- with only one arm as a challenge to solve.

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A post shared by Amanda (@adaptdorepeat) on May 7, 2018 at 2:54pm PDT

\"Becoming a really good problem solver inside the gym has translated to me being a great problem solver when I face a challenge outside of the gym,\" she said. \"I have a greater sense of who I am because of [exercise].\"

(MORE: Meet Steph Hammerman: How this cancer survivor overcame to become the 1st CrossFit Level 2 trainer with cerebral palsy)

Tighe works out around five days-a-week, some on her own and some with her trainer, Eric Pellini, a Tier X coach at Equinox.

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A post shared by Amanda (@adaptdorepeat) on Sep 22, 2018 at 8:13am PDT

\"I just noticed this member working out in the gym and she was doing these heavy back squats and really high box jumps,\" Pellini said of his first encounter with Tighe. \"I don’t think I even noticed she was an amputee until maybe five minutes into noticing her workout.\"

Pellini noted that he does not treat Tighe any different than his other clients, saying, \"She mentally put no limitations on herself and I certainly wasn’t going to put any limitations on her.\"

Tighe and Pellini use ropes, blocks, straps, basically any equipment possible to make sure Tighe can master any workout move she wants to try. Tighe calls it \"MacGyver-ing\" her way around her workouts.

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A post shared by Amanda (@adaptdorepeat) on Aug 9, 2018 at 5:47am PDT

\"I’ve always had this kind of grit,\" Tighe said. \"I try to do things on the path of resistance because it sets me apart and it makes me different.\"

\"What I’ve found is working out is about so much more than calories in and out, it’s really an opportunity to test my resilience,\" she added.

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