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A three-day-week gets the best performance from workers aged over 40, a study has found. 一项研究发现，40岁以上的人如果每周上三天班，工作表现最佳。 Researchers found the cognitive performance of middle-aged people improved as the working week increased up to 25 hours a week. 研究人员发现，当中年人每周工作时间达到25小时，认知表现将有所改善。 However, when the week went over 25 hours, overall performance for the test subjects decreased as "fatigue and stress" took effect. 然而，如果每周工作时间超过25小时，受试者的整体表现则将恶化，因为“疲劳和压力”开始产生影响。 | 
