It's possible our culture is already changing. Santa races are becoming as much of a tradition as candy canes and Christmas lights. Kids are finding active video games under the tree alongside step counters and organic cookbooks for Mom or Dad.

Pickler recently called a couple of companies he has contracts with and asked whether they were OK with a trim Santa.

"They both said, 'We want you just the way you are. Your idea of a healthy Santa is the one we want to go with.' "

Since "The Biggest Loser" finale, Pickler and his wife, Chris, have spoken to kids across the Midwest about nutrition and exercise. Pickler often walks in to schools dressed as Santa Claus and then takes off his suit, Superman-style, to reveal his new fit self.

In an upcoming documentary about Santas titled "They Wore a Red Suit," Pickler implores his colleagues around the country to get fit.

"We cannot use (our role) as an excuse, because it influences kids in the wrong direction," he said.

Maybe one day, instead of a belly that shakes like a bowl full of jelly, Santa will have a six-pack. Maybe his cheeks will glow not from the cold but because he's consuming the recommended doses of omega-3 fatty acids. Maybe Mrs. Claus will take up gardening. (Granted, that would be hard to do at the North Pole, but surely the elves can build a greenhouse or two.)

Eventually, in addition to being a role model for the Christmas spirit, our beloved St. Nick could become a healthy role model for kids.

Until then, save some cookies -- Santa Claus is comin' to town.