Guy Fieri looks shredded in his latest Instagram post. How did the celeb chef do it?

The incredible shrinking man!

Guy Fieri’s not exactly half the dude he used to be, but the Food Network star sure is looking mighty shredded.

In a new Instagram post, Fieri, who has a home in Jupiter, Florida, shows off a much buffer, slimmer frame, with before and after pics as comparison.

The 56-year-old Food Network star admitted to Men’s Health that he remains committed to keeping off the pounds.

For starters, Fieri credits a serious workout routine, which includes HIIT, High Intensive Interval Training, and rucking (hiking with a heavy backpack). The father of two also credit cold plunges to get him “fired up” and keep it moving.

As for his diet, that’s a tough one for someone who hosts a show called “Diners, Drive-ins and Dives.” But Fieri says intermittent fasting prevented him from packing on the pounds.

“Once I started getting more serious about [fasting], the quantity of food I was eating, and exercise, it really changed the whole thing,” the California native told the magazine. “It wasn’t as gnarly as you might think.”