台湾籍旅美老师今天交给我们的句子是：

The second most common cause of fatigue comes from lack of physical activity and a poor diet. Study after study finds that adults who began light exercise a few times a week reported more energy after six weeks. People who exercise more regularly also report sleeping better. Even though studies show that they aren't sleeping any longer.
导致疲劳的第二常见原因便是动得不够和饮食不当。从多项研究中接连发现：若让成年人开始每周做几次的轻度运动，在持续6周后，他们明显变得更有精神，而较常规律运动的人也表示他们睡得比较好，即使研究显示：这些人的睡眠时间并没有比较长。

学习重点：

1.fatigue 疲劳、劳累
fatigue (n.) 疲劳、劳累

2.activity 活动
activity (n.) 活动
active (adj.) 活跃的

3.diet 饮食、食物
diet (n.) 饮食、食物

4.regularly 有规律的
regularly (adj.) 有规律的
regular (adj.) 规则的