Q&A: Why can’t Michael J Fox stop moving on Jimmy Fallon?

Question by sam: Why can’t Michael J Fox stop moving on Jimmy Fallon?

Uh. What’s wrong with me? WHAT’S WRONG WITH YOU??

Best answer:

Answer by JoePip.
He’s got Parkinson’s Disease. Same thing that famous boxer Muhammed Ali (sp?) has.

What do you think? Answer below!