What Causes Insomnia at Night and Daytime Sleepiness?

In daily life, many people around us experience daytime drowsiness coupled with nighttime insomnia. So, what causes insomnia at night and excessive sleepiness during the day?

What Causes Nighttime Insomnia and Daytime Drowsiness?

Nighttime insomnia and daytime drowsiness may stem from endocrine dysfunction or underlying neurasthenia. During nighttime rest, the body’s organs undergo repair and relaxation, and physical energy is restored through sleep. When sleep is disrupted, energy restoration is impaired, and organ recovery may be incomplete. Consequently, performing demanding tasks the following day can lead to fatigue, low energy levels, and midday drowsiness. Some individuals may nap excessively—or even sleep—during the day; this excessive daytime sleep further disrupts nighttime sleep, creating a vicious cycle.

It is essential to cultivate healthy sleep habits: avoid napping during the day, and refrain from consuming coffee or tea. Maintaining a regular sleep–wake cycle is crucial. Improving these lifestyle factors often leads to marked improvement in nighttime insomnia. It is advisable to avoid watching television, playing mobile games, or reading exciting stories before bedtime—all of which may contribute to insomnia. Engaging in moderate outdoor physical activity during the day is also recommended. Regular exercise not only enhances physical fitness but also helps regulate the circadian rhythm and improve sleep quality.

If you suffer from daytime drowsiness and nighttime insomnia, adjusting your daily routine to better support your body’s natural rhythms can significantly improve your health. We hope this information proves helpful!