美国时代杂志报道，据墨尔本劳动机构与墨尔本Keio大学合作的一个就业研究，
得出一个结果，就是超过四十岁以上人士每周工作不应该超过三天，也即24小时
研究招募了3000男性以及3500女性志愿者，对他们进行认知测试和工作效率测评，
指标包括习惯，记忆力，抽象推理，决策效率等等。
结果发现，在测试者每周工作前25个小时，测试表现不断提升，之后到达峰值，然后直线下降
而每周工作55小时之后的测试着，成绩比退休老人和长期失业人士还要差很多。
所以，为了提高工作效率，把这篇文章转给你的老板看看。
附英语原文
Let’s be honest: nobody is really a fan of the five-day work week. But if you want a reason to work less, science has your back. If you’re over the age of 40, at least.
According to a report published in the Melbourne Institute Worker Paper, those over the age of 40 are at their most productive when they work three days a week or less.
The researchers came to this conclusion after following 3,000 male and 3,500 female volunteers, Newser explained. During the study, researchers asked the participants to complete cognitive tests and analyzed their work habits, memory, executive reasoning, and abstract reasoning.
The cognitive tests included asking the volunteers to read text backwards, read words aloud, and match numbers and letters under time pressure. As HuffPost explained, the participants' cognitive performance improved as the researchers increased their working hours up to 25 hours. However, after 25 hours the researchers found that performance began to decline in both the male and female volunteers.
Perhaps most surprisingly, HuffPost noted, volunteers who were tasked with working 55 hours a week showed cognitive results that were worse than those who were retired or unemployed.
"Many countries are going to raise their retirement ages by delaying the age at which people are eligible to start receiving pension benefits. This means that more people continue to work in the later stages of their life," study co-author and Keio University professor Colin McKenzie told The Times. "The degree of intellectual stimulation may depend on working hours. Work can be a double-edged sword, in that it can stimulate brain activity, but at the same time long working hours can cause fatigue and stress, which potentially damage cognitive functions.”
McKenzie noted their research points out that “differences in working hours are important for maintaining cognitive functioning in middle-aged and elderly adults” and that working part-time can "be effective in maintaining cognitive ability.”
So, for your health, please stop working so hard.
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