Wake up to your circadian clock!
We bring expertise in circadian rhythms and light therapy to the pursuit of optimal sleep, performance and health.



Carefully scheduled exposure to light in the workplace, school, hospital and home can reduce the physiological, cognitive and health consequences associated with disruptions in our circadian clock. Our circadian clock is important as it coordinates much of our physiology and behaviour, including when we sleep, when we eat, and when we perform best. Therapy can be implemented through dynamic lighting systems or by means of individualised exposure to a light box (typically 10-30 minutes a day).

We offer consultations to businesses and government, as well as group workshops and private one-on-one consultations.

Implementing circadian light therapy, you will realize many benefits, such as improved:

  • Sleep
  • Performance/productivity
  • Cognition
  • Mood
  • Health
Individualised light therapy can also help people modify their sleep/wake cycle: late types who wish to naturally awaken earlier, shift workers who need to sleep during the day and be alert at night, professional athletes travelling to compete in a different time zone, or business executives working on New York time in Vancouver.

Founder and Director
Dr. Myriam Juda

Dr. Myriam Juda is a Vancouver based circadian consultant with over ten years of research experience in the fields of psychology and circadian rhythms. She graduated Summa Cum Laude with a PhD in Psychology and Biology at the Ludwig-Maximilians University of Munich where she specialized in the sleep-wake cycle, shift work and the importance of light. She has lectured at the Ludwig Maximilian University and the University of British Columbia, and has given talks and carried out research in collaboration with some of the world’s largest companies, including Volkswagon, OSRAM (Sylvania), ArcelorMittal, and Siemens.

Dr. Myriam Juda completed her PhD in Psychology and Biology Summa Cum Laude at the Ludwig Maximilian University of Munich, where she specialised in the sleep-wake cycle and disruption of sleep by work schedules.

Her research work involved field studies in large industrial settings, resulting in important publications on the relation between circadian cycles, light, shift work, and health. She has presented at conferences worldwide and has lectured at both the Ludwig Maximilian University of Munich and the University of British Columbia, where she completed her postdoctorate.

Dr. Juda has given workshops at some of the world's largest companies, including Volkswagen, OSRAM (Sylvania), ArcelorMittal, and Siemens.

From Luxembourg, Dr. Myriam Juda now lives in beautiful Vancouver, Canada, together with her husband and two children.


Circadian Light Therapy is privileged to have the support and advice of some of the world’s leading experts in Chronobiology.

is Professor of Chronobiology, Head of the Centre for Chronobiology, and vice-chair of the Institute for Medical Psychology at the Ludwig Maximilian University of Munich. He is the past president of the European Biological Rhythms Society, the president of the World Federation of Societies for Chronobiology, and a member of the Senior Common Room of Brasenose College, University of Oxford.

From 2005 to 2010, Till Roenneberg coordinated "EUCLOCK", a large European wide research network (16 Million budget) and the Daimler-Benz- Foundation network "ClockWORK" and from 2010 to 2012 he was the member at large of the Society for Research of Biological Rhythms. He is also the author of the popular science book titled Internal Time: Chronotype, Social Jetlag, and Why You’re So Tired.

is a Chronobiologist and Epidemiologist at Brigham and Women's Hospital and Faculty at Harvard Medical School. She is also a founding member of the German Working Time Society (www.arbeitszeitgesellschaft.org) and a member of the Society for Research on Biological Rhytms and the European Biological Rhythms Society. Her research focuses on circadian rhythms, work hours and acute and chronic effects on health, safety and wellbeing. Her interest in translational chronobiology, which links research from the basic sciences with clinical application, makes her an asset to this team.

is a Professor in the Department of Psychology at Simon Fraser University in Vancouver, Canada, where he directs the Circadian Rhythms and Sleep Laboratory. His group conducts basic research on the neurochemical and environmental control of circadian (daily) rhythms and sleep, and applied research on shiftwork and sleep restriction in humans. Dr. Mistlberger also advises professional and elite amateur athletes to help them overcome the challenges of competing in different time zones.

"I got kissed by the light and life changed."

For many years I’ve felt very tired. I was running to doctors and homoeopaths, made blood tests and a variety of other medical tests. As I continued feeling absolutely “whacked” and grouchy in the morning, I was even afraid I had a rare illness that nobody understood.

The situation was particularly bad during the dark and cold months. And the switch to summertime hours made me feel I was always running behind, missing that hour for the whole summer.

In shops and in magazines, I saw the circadian lights but was not really interested in investing the time to investigate as I thought that these were just money making gadgets on the market. However, when Dr. Myriam Juda offered trials for Circadian Light Therapy, I jumped at the opportunity. I was positively surprised by not only the benefits I got from this program, but also the complexity of the topic itself.

After a few weeks, I felt like I was in the tale “Sleeping Beauty”, when she woke up after the prince kissed her. I got “kissed” by the light and life changed. Another important benefit of circadian light therapy came when I spent a holiday in a country with a different time zone, followed on my return home by the switch into summertime hours. Dr. Myriam Juda advised me how to manage this period, and it was the first time in my life that the switch to summertime passed without the usual negative effects, like feeling dizzy and sleepy.

I recommend this therapy to anyone who feels tired “without any reason”. But would advise you as well to be careful with self-treatment. My program was adapted several times, and without coaching I would have made decisions for the use of the light that would have worsened the situation.

So, if you want to improve your quality of life, go ahead with the support of an expert like Dr. Myriam Juda.

Désirée from Luxembourg, June 2016
"Working with Dr. Juda ... a joy"

Working with Dr. Myriam Juda was a joy. She was sensitive and circumspect in assessing my seasonal sleep problems and symptoms – sleepiness, irritability, and loss of concentration. Her explanations were clear and detailed. The treatments were simple. I soon felt more alert and calm. For me the objective proof the treatment was working was when spring time change came, I was still waking before my alarm.

Miles from Vancouver, June 2016
"... helped me incredibly!"

Circadian Light Therapy has helped me incredibly! It used to take me three alarm clocks for 45 minutes to wake up every morning, grumpy. Now, I wake up before the alarm rings and feel so much more awake and alert. The light is very pleasant and energizing. The in-depth and detailed expertise of Dr. Myriam Juda impressed me. My questions were always answered promptly and competently via Skype, phone, or email.

With the problems I had prior to Circadian Light Therapy, I would trust Dr. Myriam Juda anytime!

Birgit from Munich, June 2016
"... fresher and more productive ..."

Ciradian light therapy was effective at establishing long term sleep hygiene. I wake up fresher and more productive each day with a significant reduction in daytime sleepiness.

Ben from Vancouver, July 2016