Does keeping your eyes closed but being unable to sleep count as staying up late?

In general, whether lying with eyes closed but unable to sleep counts as staying up late mainly depends on an individual's sleep quality and mental state. If the brain remains active while the eyes are closed and sleep does not occur, it is generally considered staying up late. However, if one eventually achieves good sleep quality and maintains a good mental state afterward, it usually does not count as staying up late. The detailed explanation is as follows:

If the reason for lying awake with eyes closed is intentional wakefulness—such as reading, thinking, or using a mobile phone—the brain remains active despite closed eyes, which typically qualifies as staying up late. Long-term staying up late may disrupt the body's circadian rhythm and lead to various health issues, including reduced memory, mood swings, and weakened immunity.

However, if although it takes a long time to fall asleep after closing the eyes, the individual still obtains sufficient sleep (7–9 hours) within the normal sleep period and feels well-rested the next day without fatigue or drowsiness, this situation does not constitute staying up late, as it does not negatively affect physical or mental well-being.

It is recommended to engage in relaxing activities before bedtime, avoid using electronic devices, keep the bedroom quiet, dark, and at a comfortable temperature, maintain a regular sleep schedule, and develop healthy sleep habits.