By blocking the blocker—to football fans, adding an extra guard toyour offensive line—the scientists got nitric oxide to open blood vessels againand increase blood flow, at least in lab animals.

By blocking the blocker-to football fans, adding an extra guard to your offensive line-the scientists got nitric oxide to open blood vessels again and increase blood flow, at least in lab animals.

Ines Sainz makes friends with the Colts Offensive line!