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1 results

  • Chapter 2 - Why Does Sleep Matter?

  • from Section 1 - Sleep, Its Function, and Insomnia
  • Colin A. Espie, University of Oxford, UK
  • Book:
    The Clinician's Guide to Cognitive and Behavioural Therapeutics (CBTx) for Insomnia
    Published online:
    20 December 2024
    Print publication:
    09 January 2025, pp 22-34

  • Summary

    Sleep is vital to our existence; it underpins a myriad of brain and bodily functions, and supports optimal functioning across a variety of different domains including cognitive functioning, emotional regulation, tissue repair and growth, and our immune system, among others. It is not surprising, therefore, that when sleep disturbance is experienced it can lead to impairments in performance and functioning. In addition, when sleep and circadian disruption are experienced regularly, such as in the context of insomnia, individuals can be at increased risk of developing a range of physical and mental health disorders including cardiovascular disease, depression, and anxiety. Such findings reinforce the need to address sleep disturbance and also highlight that it is not only sleep duration that is important but also timing and regularity of sleep–wake patterns.