如果你想增加大脑学习区域的新神经元数量，可以尝试锻炼。研究发现，诸如慢跑、健步行走和游泳这类适度的有氧锻炼可以增加大脑内部重要连接区域的神经元数量。

When we forget the names of certain clients and details about old jobs, our brain is making a choice that these details do not matter. Although too much forgetfulness can be a cause for concern, the occasional lost detail can be a sign of a perfectly healthy memory system. The researchers found that our brains facilitate decision-making by stopping us from focusing too much on minor past details. Instead, the brain promotes generalization, helping us remember the most important gist of a conversation.

如果人们忘记了某些客户的姓名和原先岗位的细节，那是大脑在进行选择，认为这些细节无关紧要。虽然严重健忘可能令人担忧，但是偶尔忘记枝节小事可能表明记忆系统非常健康。研究人员发现人们的大脑通过阻止人过多关注以往的细枝末节来加强决策能力。大脑通过促进归纳来帮助人们记住最重要的谈话要点。

“One of the things that distinguishes an environment where you’re going to want to remember stuff versus an environment where you want to forget stuff is this question of how consistent the environment is and how likely things are to come back into your life,” Richards said.

理查兹说：“区分究竟该记住还是该遗忘的要素之一就是：相关情景的一致程度如何及其在生活中再现的可能性有多大。”

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