The Incredible Shrinking John Goodman — the star of HBO’s Treme — dropped by the Late Show with David Letterman on Wednesday night, where he chatted about his well-documented recent weight loss.

Did you know that at his heaviest John tipped the scales at almost 400 pounds?

“I’d get off of ‘Roseanne’ every spring. I’d lose 60 lbs every spring. Then I got too fond of the barley corn… I’d gain it back and then some, every year,” Goodman told Letterman, explaining how his waistline continued to balloon over the years.

And while he didn’t specify what he did this time to drop the pounds, John’s on a mission to lose more.

“[I'm] getting a lot of exercise, I feel great.. It’s going to be an ongoing process for the rest of my life.”