糖类则会阻碍促食素的释放。

Sugar, however, blocked the release of orexin.

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结果发现，葡萄糖抑制了促食素细胞的作用，或许这就是人们午餐后需要小睡的主要原因。

Turns out that glucose blocks the function of the orexin cells. This effect might be the main reason for the desired post-lunch siesta.

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一种与蛋清中所含的蛋白质相类似的混合物质激活了这些脑细胞，引发了使人兴奋的促食素大量释放。

A mixture similar to the protein content of egg whites activated these cells, triggering the release of the stimulant orexin.

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