Frequently Asked Questions

Shift Work & Jet Lag

How does Shift work & Jet lag effect us? Back to top

Many processes in our bodies follow a daily ("circadian") rhythm, including sleep/wake cycles. If we alter the usual times when we are active and when we sleep, e.g. working night shift or travelling overseas to a different time zone, it is common to experience difficulty sleeping. If you are s...

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What strategies can help with adjusting to a different sleep/wake pattern? Back to top

  • Light exposure, timed correctly within the circadian rhythm, is a powerful way of adjusting our internal body clock and adapting to a new sleep/wake routine.
  • Melatonin, a natural hormone produced by our bodies, also helps to regulate the body clock. Taking extra melatonin in t...

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Dr Adrian Chazan



Dr Chazan is a Respiratory & Sleep Physician, and General Physician. Born in Melbourne, he undertook his basic medical training at the University of Melbourne. With a passion for sleep and breathing, he trained at world-renowned centres of excellence in Melbourne and Sydney, including Westmead Hospital, the Alfred Hospital and Monash Medical Centre. Adrian has been involved in research activities in the fields of sleep apnoea, chronic obstructive pulmonary disease and exercise physiology.

Adrian utilises the latest findings in sleep research as well as the emerging technologies in diagnosis and treatment. He takes a patient-centered approach to medical care with the aim of empowering his patients to achieve better sleep and optimal long-term health outcomes.

Dr Rajiv Sharma



Dr Sharma completed his basic physician training in St Vincent’s Hospital in Melbourne. Subsequently he trained in Respiratory Medicine at The Canberra Hospital and Sleep Medicine at Princess Alexandra Hospital in Brisbane. Prior to relocating to Melbourne, he worked as a full time Respiratory & Sleep Medicine staff specialist at Townsville Hospital. Rajiv enjoys managing all aspects of Respiratory and Sleep disorders including Asthma, COPD, interstitial lung disease, chronic cough, lung nodules, sleep apnoea, hypersomnolence, restless legs syndrome and other non-respiratory sleep disorders.

He also has a special interest in interventional pulmonology (bronchoscopic techniques). Dr Sharma also has keen interest and experience in medical education and research and has been involved in these areas for a number of years.