The caffeine works its way through your bloodstream and into the brain, where it starts to compete and binds with adenosine receptors.

咖啡因顺着血液流至大脑，并开始与腺苷作斗争，与腺苷的受体结合。

Caffeine is what's called an adenosine receptor antagonist.

咖啡因是所谓的腺苷受体拮抗剂。

That means it derails this process of slowing your neurons down by blocking adenosine receptors.

这意味着它会通过阻断腺苷受体来破坏这种减慢神经元速度的过程。

There are more and more adenosine receptors to block.

有越来越多的腺苷受体需要阻断。

In some neurons, the adenosine receptors are linked to receptors for another molecule called dopamine.

在一些神经元中，腺苷受体与另一种称为多巴胺的分子的受体相连。

If your adenosine receptors are perpetually clogged, your body will manufacture extra ones.

如果你的腺苷受体一直被堵塞，你的身体就会制造额外的腺苷受体。

However, with long term use of caffeine, your brain responds by creating more adenosine receptors, which means more caffeine is required to elicit the same response.

然而，长期摄入咖啡因，大脑就会制造更多腺苷受体来回应，如果要达到同样的效果，你就需要更多的咖啡因。

Caffeine, on the other hand, is kind of 'Trojan horse, ' its molecules bind to these adenosine receptors and block them, increasing your dopamine levels, and making you more alert.

不同的是，咖啡因则是一种“木马病毒”，它的分子与这些腺苷受体结合并阻断它们传递信息，增加你的多巴胺水平，使你更加清醒。

Caffeine and adenosine have a similar molecular structure, close enough that caffeine can wedge into the adenosine receptors, but not close enough to activate them.

咖啡因和腺苷具有相似的分子结构，足够接近以至于咖啡因可以楔入腺苷受体，但又不足以激活它们。

Some studies suggest that if you have caffeine day in and day out, your brain cells start to make more adenosine receptors to compensate for all the blockage, trying to keep your brain working normally.

一些研究认为如果你夜以继日地摄入咖啡因，你的脑细胞将会产生更多的腺苷酸受体来补偿给阻滞处，试着使你的大脑正常工作。