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Waking up in the zone with Sleep Cycle
  1. Michele Lastella,
  2. Gregory Daniel Roach,
  3. Charli Sargent
  1. Appleton Institute for Behavioural Science, Central Queensland University, Adelaide, South Australia, Australia
  1. Correspondence to Michele Lastella, Central Queensland University, Appleton Institute for Behavioural Science, PO Box 42, Goodwood, Adelaide, SA 5034, Australia; m.lastella{at}

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Name of mobile application

Sleep Cycle alarm clock.


Health and fitness.


iOS 8.0 or later/Andriod 4.0 or later.


Free for iPhone; Android $A1.49.

About the app

Sleep is an essential component for athletes due to its physiological and psychological restorative effects.1 Sleep is categorised into two main phases, non-rapid eye movement (NREM) sleep which consists of progressively deeper sleep stages 1, 2 and 3 and REM sleep.2 While REM is associated with learning and memory processes, slow-wave sleep (SWS; NREM 3), the deepest sleep stage is where growth hormones are secreted stimulating protein synthesis necessary for muscle repair and growth.3 Despite conflicting research; when sleep is interrupted during the wrong sleep stage (ie, SWS and REM) it may result in lower levels …

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  • Contributors ML contributed to the concept, design and write-up of the manuscript. GDR and CS contributed to the review and editing of the manuscript.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; internally peer reviewed.