经常看到不少人有这样的感慨： 记忆力变差了，刚看到的东西一转头就忘记，很多简单的事情都记不住； 总觉得脑子里装满了杂乱的信息，昏昏沉沉的，没什么精力思考问题； 1. 分心 你是不是有这样的习惯：一边工作，一边查资料，一边在网上闲逛，可能还看几眼视频，刷刷社交媒 体，同时抽空看微信，回一下别人的消息…… 如果是的话，请注意：这个习惯，可能正在悄悄拖垮你的脑力。 为什么呢？很多人会以「多任务」为荣，得意于自己可以同时做好几件事情。但实际上，大脑是没办法 真正进行多任务的。你看起来在同时处理几件事情，其实只是快速不断地在它们之间来回切换而已。 比如你在写作过程中转头查资料，大脑实际上做的是：关闭写作的任务，清理掉残余的信息，切换到搜 索资料的状态，加载所需要的信息，规划接下来要做的步骤，把它们写入工作记忆，指挥身体去做出行 动…… 你每进行一次切换，这个过程都会重复一次。 明明看了很多东西，学了很多东西，但用的时候总是想不起来…… 有些人可能会觉得，是不是自己年纪上去了，大脑变笨了？但其实不一定。 我们生活中有一些司空见惯的小习惯，看上去没什么，但其实是大脑非常害怕的。它们会加重大脑的损 耗和负担，让大脑工作在运转 ...

Core Points - The article discusses habits that can negatively impact cognitive abilities, emphasizing the importance of avoiding these habits to maintain brain health [6][7]. Group 1: Sedentary Behavior - Prolonged sitting is identified as a hidden harmful habit, with studies indicating that sitting for more than 2 hours can lead to cognitive decline due to reduced oxygen supply to certain brain areas [9][10]. - It is recommended to change positions or take breaks every 20-30 minutes to mitigate these effects [10]. Group 2: Television Watching - Research shows that watching television for extended periods can decrease performance on intelligence tests, with each additional hour reducing correct answers by 0.15 [12][13]. - The passive nature of watching TV leads to a lower state of brain engagement, contrasting with the active engagement required when using a computer [12][13]. Group 3: Smartphone Use - Frequent smartphone use, particularly on social media, stimulates the brain's reward pathways, leading to a preference for immediate rewards over long-term benefits, which can impair decision-making abilities [16][17]. - It is advised to limit time spent on smartphones and engage in more mentally stimulating activities [18]. Group 4: Lack of Exercise - Physical fitness is linked to cognitive function, with studies indicating that individuals with better physical health experience slower cognitive decline as they age [20][21]. - Regular aerobic and anaerobic exercise is encouraged to support brain health [21]. Group 5: Sleep Deprivation - Quality sleep is crucial for maintaining cognitive function, and sleep deprivation can lead to decreased mental performance [23][24]. - Creating a conducive sleep environment and avoiding screens before bedtime are recommended practices [24]. Group 6: Internal Inflammation - Chronic inflammation from certain foods can negatively affect cognitive abilities by diverting brain resources to manage inflammation [26]. - It is suggested to avoid pro-inflammatory foods such as high-salt and high-oil items [27]. Group 7: Nutritional Imbalance - A lack of essential nutrients like B vitamins, iron, and magnesium can lead to cognitive decline and fatigue [28][29]. - Maintaining a balanced diet with diverse food options is emphasized to support brain function [29][30]. Group 8: Overwhelming Tasks - Excessive daily tasks can lead to decision fatigue, reducing cognitive resources available for complex problem-solving [33][34]. - Implementing routines to automate minor decisions can help conserve cognitive energy for more significant issues [34]. Group 9: Repetitive Lifestyle - A monotonous lifestyle can lead to cognitive decline due to a lack of new stimuli, which is essential for maintaining brain engagement [36][37]. - Engaging in new activities and challenges is recommended to refresh cognitive function [37].