Attempts to reveal factors contributing to insomnia
have partly focused on the role of sleep hygiene
(SH). SH broadly refers to a set of behaviors that
influence the quality of oneTs sleep. The formal
diagnostic category, inadequate sleep hygiene, identifies
insomnia due to SH (The International Classification
of SleepDisorders, Second Edition [ICSD-II],
American Academy of Sleep Medicine, 2005). This
insomnia subcategory is defined by engaging in one
or more behaviors related to the following five
categories: (1) improper sleep scheduling, (2) the use
of sleep-disturbing products, (3) engaging in activating
or arousing activities close to bedtime, (4) the use
of the bed for activities other than sleep, and (5)
maintaining an uncomfortable sleeping environment.