Hannah Mohn was born with a disease that makes her muscles weak . The WREX uses special elastic bands to give a child 's arm a weightless feeling . ` She has to use an oxygen tank and is in constant pain, but she can still walk normally. It allows her to raise her arms without assistance .
Hannah Mohn was born with a disease that makes her muscles weak . She has to use an oxygen tank and is in constant pain, but she can still walk normally. It allows her to raise her arms without assistance .