Nigerian trio facing some tough sledding

Seun Adigun told herself her athletic career was done after she ran her last race at the 2012 Summer Olympics in London.

But for some reason, she couldn't bring herself to tell the world.

Three years later, Adigun realized she wasn't retiring - she was readying for a new sport. And her years competing as a 100 meter hurdler were great preparation for what would come next.