One of the best parts about the Olympics every four years is the amazing back stories of the many athletes.
Whether it's escaping tough upbringings, battling physical or emotional ailments, or even escaping war-torn countries, these athletes haven't let anything get in their way.
All of them are hoping their will to persevere will help them stand at the medal podiums in London in a few weeks.
Carrie Johnson won't let Chron's disease — a debilitating and incurable digestive disorder — ruin her Olympic rowing dreams for the U.S. team
Source: Everyday Health
Double amputee Oscar Pistorius will run in the 400-meters for South Africa. He's the first amputee runner to participate in the Olympics
Source: Oscar Pistorius
Nur Suryami Mohd Taibi may be several months into her pregnancy, but she still plans to compete in rifle shooting for Malaysia
Source: Huffington Post
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