睡眠 (shuì mián): นอนหลับ

Work has been so stressful lately that my sleep quality has clearly gotten worse, and I often toss and turn at night without being able to fall asleep.

The doctor advised him to make sure he gets seven to eight hours of sleep every day so that his body can gradually recover.

After the baby was born, our whole family's sleep schedule was thrown off—we always have to get up several times in the middle of the night.

To improve his sleep, he stopped looking at his phone an hour before bed and also kept up a half-hour walk every evening.

In the days before the exam, I was so nervous that I didn't get enough sleep, and I kept yawning during class.