They say sleep is the most important.

Sleep, diet, exercise.

Among them, sleep is considered adequate with at least 7 hours of sleep, but I wonder if modern people can actually achieve that.

You should use the remaining time efficiently for sleep.

Usually, when you're busy, you cut back on sleep. They say to make better use of your awake time for sleep.

The company employee working overtime is feeling increasingly worried because it's not due to inefficiency or lack of time. 🥲