Joe Rogan -- I'M JACKED

Soooo ... Joe Rogan works out.

The UFC announcer went shirt-off at the beach in Hawaii this weekend ... proving Carrot Top ain't the only comic who knows his way around the weight room.

Fun Fact -- Rogan also happens to be a black belt in Brazilian jiu-jitsu ... which is why we're immediately issuing the following apology for comparing him to Carrot Top.

Sorry Joe.