By Margaret Lyons
Updated January 07, 2011 at 06:00 PM EST

Jim Carrey’s full-court press continued last night on Late Night with Jimmy Fallon, where he was interviewed while running on a treadmill. Why? They don’t say! He’s just one celeb who exercised during a show in the last 24 hours, though: Kathie Lee and Hoda were exercising during the fourth hour, and Ellen DeGeneres was biking during her Camille Grammer interview. Weird.

Anyway, marvel at the endurance, and enjoy the anecdotes about going to gay bars with Ewan McGregor.

I’m getting winded just watching him. Remember, dude is a grandfather.

Are you ready for the great Jim Carrey comeback, PopWatchers? And are you trying to master playing the guitar while running?

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