Daniel Craig works out at DavidBartonGym

He didn’t get that fit body sitting around on his behind.

Daniel Craig didn’t get his famously fit body by sitting around on his behind.

The “James Bond” star amped up his studly physique with a 9:30 a.m. workout at DavidBartonGym earlier this week, alternating between sprinting and jogging on the treadmill, a fellow gymgoer told us.

According to the spy, Craig, 46, kept a “low profile” at the Astor Place gym, wearing black workout gear with a low-slung baseball cap and large headphones.

JULIE GORDON