This reduces the time you are awake in bed.

这能减少在床上醒着的时间。

youdao

The period of time that you are awake adds to something called “sleep drive.

你醒着的时间会增强“睡眠驱动力。”

youdao

This is not wasted time, it improves the quality of your life when you are awake.

这不是浪费时间，而是要提高你清醒时的生活质量。

youdao

The next time you think about going without sleep, consider this: Laboratory animals that are kept awake for long periods of time ...die.

VOA: special.2009.08.26

Some nonmedical options to try include staying hydrated, exercising or being active during the time you are supposed to be awake, and getting enough overall sleep before, during and after travel if possible.

CNN: Can melatonin prevent jet lag?