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To send content items to your Kindle, first ensure firstname.lastname@example.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about sending to your Kindle.
Note you can select to send to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Insomnia is the common sleep disorder, with prevalence estimates ranging from 10 to 20% of the population. An insomnia disorder is a syndrome consisting of at least one insomnia complaint in an individual with adequate circumstances for sleep, combined with daytime impairment. Given that the underlying causes of insomnia are often complex and multifactorial and that co-morbid insomnias are the most prevalent type of insomnia disorder, carefully differentiating between insomnia symptoms and other co-morbid conditions that may contribute to or be exacerbated by the insomnia symptoms, is critical for optimizing treatment efforts. The experience of transient insomnia symptoms at some point during the life course is nearly universal experience. A number of demographic, psychosocial, and behavioral risk factors have been identified as important risk factors for chronic insomnia. The physiological model of insomnia is based on the central assumption that insomnia represents a disorder of increased physiological arousal.