This in turn lets the good old brain know whether the actual problem is real or just your imagination playing havoc with you.

这从而让…大脑知道实际问题是真实的还是仅仅为你的想象力在干扰你。

youdao

Thee problem with older cheeses is the tyramine you can find in them. This releases a stimulating chemical in your brain, which is kind of the opposite of what you want.

陈年的奶酪中具有酪胺，会使大脑中释放刺激性物质，吃了它可就睡不着了。

youdao