It's a new event kicking off Saturday. Participants will track their progress and get advice from fitness experts for free on the city's "Energize Evansville" Facebook page.
Terry Voegel works for the city, and he's already started the challenge.
"I may never be skinny," said Voegel. "I've been telling all these girls over here that Thursday I'll be skinny. But I've never told them which Thursday, but some Thursday maybe. At any rate, if I didn't lose a pound, it's still a win."
Voegel says the program has already helped him lose 16 pounds, and he no longer needs insulin to treat his diabetes.