
Sleep is one of the most important basic needs of the human body. Sleep has various
vital functions, such as restoring energy, supporting brain function, regulating mood,
strengthening the immune system, and helping the body recover after daily activities. During
sleep, the body and brain carry out important processes that allow a person to function
properly the following day. Because of these important functions, maintaining good sleep
quality is essential for overall physical and mental health.
Under normal conditions, a person should be able to fall asleep easily, remain asleep
throughout the night, and wake up feeling sufficiently rested. However, when a person
repeatedly has difficulty falling asleep, staying asleep, or wakes up too early and cannot
return to sleep, this condition may indicate insomnia. Poor sleep habits can also contribute to
sleep problems. These habits are known as poor sleep hygiene, which may include irregular
sleep schedules, using electronic devices late at night, consuming stimulating substances
close to bedtime, or having an uncomfortable sleeping environment. If these habits continue
over time, they can interfere with sleep quality and may increase the severity of insomnia,
resulting in daytime fatigue, difficulty concentrating, mood changes, and reduced ability to
carry out daily activities.
The causes of insomnia are not limited to a single factor. Daily habits and lifestyle can
play an important role in the development of sleep problems. An irregular sleep schedule,
staying awake late at night, using electronic devices before bedtime, worrying or thinking
about important matters while in bed, and an uncomfortable sleeping environment can
interfere with a person's ability to obtain good quality sleep. Among college students,
research has found that improper sleep scheduling, behaviors that increase alertness near
bedtime, and uncomfortable sleeping environments are associated with greater insomnia
severity. In particular, improper sleep scheduling remained significantly associated with
insomnia severity even after other risk factors were considered.
Other factors that may contribute to poor sleep hygiene include excessive caffeine
consumption, irregular exercise habits, daytime naps, exposure to light at night, noise,
uncomfortable room temperatures, stress, and the absence of a relaxing bedtime routine.
Sleep hygiene generally involves behavioral and environmental factors that can influence
sleep, although the specific components may vary between individuals and studies. A recent
bibliographic review identified sleep timing, caffeine, exercise, light exposure, napping,
noise, temperature, stress, and wind-down routines among the most commonly discussed
components of sleep hygiene. Therefore, maintaining a regular sleep schedule and creating a
supportive sleeping environment are important parts of developing healthier sleep habits.
Insomnia does not always appear suddenly. In many cases, it can develop as a result
of everyday routines that gradually disturb a person's sleeping pattern. Staying awake late to
complete assignments, using social media, watching videos, or engaging in other activities
can cause bedtime to be postponed repeatedly. Over time, this can make it harder for the body
to maintain a consistent sleep rhythm. College students may be particularly vulnerable
because academic demands and personal responsibilities can affect their sleeping routines.