Robert Pattinson Gets Hot & Sweaty Late Night

At Louisiana Gym!

Wonder how R-Patz gets those insane abs? We've learned that he's doing his tightening and toning at a Louisiana gym — by himself!

Robert Pattinson is spending his nights getting hot and sweaty at a local Baton Rouge, La., gym, we're told. And we've got photos of his workout gear.

HollywoodLife.com (Credit for this article) has learned that Rob was spotted working out at Fusion Health and Fitness in Prairieville, La., right after Thanksgiving, and our source tells us that he "looked like a total pro!" (No word on whether he went shirtless for the workout.)

"Rob came in at night right before closing, and he spent the entire time lifting weights," a source tells us. "He seemed like he really knew what he was doing, but he spent the time keeping to himself, not talking to anyone really."

The source added that Rob's reason for picking this low-key gym is its close proximity to one of the Breaking Dawn set locations. We're guessing Rob is trying to compete with his costars Kellan Lutz and Taylor Lautner's hot bods.

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Another related article:

Kellen Lutz: Robert Pattinson Now Works Out; Has Best Abs!