2. You Can Catch Up on Sleep on Weekends
2. 周末可以補覺

When we lose sleep during the week, we accumulate a kind of sleep “debt.” Think you can pay that debt back by sleeping in on Saturday and/or Sunday? Not so fast. This might actually make you sleepier the next week. Instead of waking up later on the weekends, you’re better off going to sleep earlier or perhaps taking a nap in the afternoon.
如果我們工作日期間沒有睡夠，我們就欠下了睡眠“債”。你想的是周六日多睡一點就可以償債嗎？并不盡然，而且你下周很可能會更困倦。與其周末睡懶覺，你還不如早點上床，或者睡個午覺。