The 42-year-old “Dawson’s Creek” star danced six hours a day when he appeared on 2019’s “Dancing With The Stars,” and he leaned out considerably as a result.

“Fight training vs. dancing,” he wrote on Instagram along with a side-by-side topless selfie of before and after.

“I’d been training in Muay Thai three days a week for about six months (for the next project I’m writing) when I hit pause to dance six hours a day. Now I can rhumba.”