首先，你一天的睡眠时间足够吗？

First, do you have enough time to sleep every day?

youdao

如果你现在睡眠时间在8 - 10小时左右而你感到一天的活力很低，不是因为你需要睡更多。

If you're currently sleeping around 8 to 10 hours and you feel LOW on energy during the day, it's not because you need more sleep.

youdao

如果你一天有6 - 8个小时的睡眠时间，那么你每晚将有4 - 5次REM阶段，每个阶段时间可能不一样，但都做着梦(虽然决大部分你不可能记起)。

If you get six to eight hours of sleep, you experience four to five rem periods of various lengths, all of which are dream filled (though you probably won't remember most of them).

youdao