Sept 2 What is social jet lag

What is social jet lag?
Take Away English｜BBC Learning English

From Monday to Friday, many of us have an early start and a long day. By the time we've gone to bed and managed to fall asleep, we've been woken up by the alarm to do it all again. Come the weekend, and we're totally exhausted. We sleep in way past our usual wake-up time just to stay in sync enough to start again on Monday.
从周一到周五，我们许多人都早早起床，忙碌一整天。等到我们上床睡觉并好不容易入睡时，又被闹钟叫醒，开始新的一天。到了周末，我们彻底筋疲力尽。我们睡到比平时起床时间晚得多，只是为了保持同步，好在周一时有足够的精力重新开始。


Welcome to social jet lag. That's the term for the disparity between our working-week sleeping pattern, when our sleep times relate to our responsibilities, and the weekend, when we can wake when we choose. And depending on what type of person you are, the difference can be significant.
欢迎来到社交时差。这是指我们的工作周睡眠模式（当我们的睡眠时间与我们的职责相关时）和周末睡眠模式（当我们可以选择何时醒来时）之间的差异。这种差异可能很大，它取决于你是哪种类型的人。

原文见公众号【琐简】