Since Michael's symptoms are ever-changing, Dr. Oz says he can go from shaky to steady in just a few hours.

When the tremors subside, Michael likes to lace up his skates and enjoy a favorite childhood pastime—ice hockey.

After his sit-down interview, Michael asks Dr. Oz to meet him at Wollman Rink in New York City's Central Park.

"I was a little worried he might need a little help on the ice," Dr. Oz says. "Boy, was I wrong."

Watch as Michael glides across the ice.