When they detect an extended dry period, they divert their metabolisms, producing sugars and certain stress-associated proteins and other materials in their tissues.

当它们发现干旱期延长时，它们会改变自己的新陈代谢，在它们的组织中产生糖和某些与应激相关的蛋白质和其他物质。

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For example, during a period of heightened stress, participants may be willing to provide liquidity to a market if a strong central counterparty is present but not otherwise.

例如，在高度紧张时期，如果出现一个重要的强有力的交易方，参与者可能愿意向市场提供流通性。

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“It turns out that hybrids don’t have much loss-absorbing capacity and are not much use in a period of stress, ” concludes Mr Ramsden of Goldman Sachs.

“结果证明，资产组合没有太多吸收损失的能力，并且在紧张时期用处不大。” 高盛银行的拉姆斯登先生总结道。

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"When people are entering a high-stress period, they don't sleep and don't exercise, but in fact, it should be just the opposite, " says Loehr.

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So, while chronic stress is always bad for you, a short period of mild stress followed by a period of recovery can be good.

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And earlier this year, a study found that when mice are subjected to stress over a period of time, they have more phosphorylated tau protein deposits in their brains (see this Scientific American blog for a nice synopsis).

FORBES: Could Stress Lead to Dementia? (Yes, But Read This Before You Panic)