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.

通过阻塞这个障碍物，(对球迷来说，就是在你的进攻线上增加一个额外的防守)，科学家们用一氧化氮重新疏通了血管，并促进了血液流动。至少在实验室动物身上是如此。

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