Crossword: The importance of sleep to mental welbeing

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Across
  1. 3. A circadian rhythm sleep disorder characterised by an advance in the timing of sleep onset and awakening compared to the timing that is desired
  2. 6. A person’s observable actions
  3. 8. All direct and indirect sunlight during the daytime
  4. 9. The percentage of alcohol in the bloodstream
  5. 11. A circadian rhythm sleep disorder characterised by a delay in the timing of sleep onset and awakening compared with the timing that is desired
  6. 13. A category of sleep disorders in which sleep is disrupted because the circadian rhythm and a person’s sleep–wake schedule are misaligned
  7. 14. A part of the visible light spectrum that is emitted from smartphone screens, computer monitors, televisions, LED and fluorescent light bulbs, as well as sunlight
  8. 15. A person’s mental processing
Down
  1. 1. Receiving less sleep than normal within a 24-hour period (either quantity or quality)
  2. 2. A therapy to treat a sleep disorder in which the person is exposed to a bright light to reset the sleep–wake cycle
  3. 4. Work that regularly takes place outside of normal business hours, particularly at night and the very early morning; can cause a circadian rhythm sleep disorder
  4. 5. Receiving no sleep within a 24-hour period, equivalent to one complete night without sleep
  5. 7. An environmental cue such as light, temperature and eating patterns that can synchronise the body’s circadian rhythm
  6. 10. A person’s experience of their emotions
  7. 12. The sleep-related behaviours and environmental conditions that are beneficial for sleep