aundrea cline-thomas sat down with fox, she joins us live from the digital operations center with more. >> george, michael j. fox was diagnosed in 1991, but he did not make it public for another seven years. he said one call from muhammad ali changed the way he looked at his diagnosis. like many gyms you don't have to look far to see muhammad ali's picture, his quotes provide inspiration for the next generation. but ali's biggest fight three years after retiring from the ring. in 1984 he was diagnosed with parkinson's disease, the neurological disorder caused tremors and reduced his physical ability. >> i got on the phone with him. he was quiet and said in a soft voice i'm glad you're in this fight with me. >> it was the first time michael j. fox ever smoke to muhammad ali. fox is also battling parkinson's disease. >> it's a challenge. and inspiration to follow through on what we're trying to do. >> together they became the most prominent faces of the disease, they even went to congress to fight for research and funding. it was how ali continued to command a room despite the crippling