10/31/2008 at 06:00 PM EDT
Ryan Reynolds is planning to run the ING New York City Marathon on Sunday – against his better judgment.
"I would sooner be prime minister of the moon than run another marathon," the actor said in New York on Friday. "I've been really lucky. I didn't have any toenails fall off or anything disgusting like that. I still have all three nipples."
The actor said his new wife, actress Scarlett Johansson
, has been giving him a lot of love and support, and would be there Sunday. "She'll be on the road somewhere," he says. "She better be."
Reynolds started training for the event five months ago because he "is not a born runner."
He announced in September
he would run on behalf of the Michael J. Fox Foundation.
Reynolds credits his father, Jim Reynolds, "who's spent the last 15 years in a life or death struggle with Parkinson's Disease." With his dad as inspiration, Reynolds joined Team Fox
and has already raised $80,011.08 for the Foundation's mission to cure Parkinson's.
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