It is our mission to raise awareness to the importance of light and the circadian clock to our health.
We remain current with the scientific literature and conduct research in collaboration with universities and government agencies.
We provide talks and workshops to a variety of audiences, including companies, unions, health care professionals, and self-help groups.

Our talks and workshops cover such topics as: the circadian clock; it's influence on our daily behaviour, including when we feel alert, physically fit or sleepy; circadian rhythm disturbances; short and long term consequences for health and performance; the importance of light; and practical advice on how to adjust the circadian clock to improve sleep, mood and energy. Other topics include: adverse effects of shift work; consequences of fatigue and sleep deprivation on performance and safety; risks and costs to corporations; the importance of chronotype in predicting tolerance to shift work; the need for increased worker education; and strategies to lessen the impact of shift work.

Contact us for a free consultation to determine if our services are right for you and how we can best meet your needs.

Selected Publications

Juda, M., Vetter, C., & Roenneberg, T. (2013). Chronotype modulates sleep duration, sleep quality and social jetlag in shift-workers. Journal of Biological Rhythms, 28(2), 141-151.
Juda, M., Vetter, C. and Roenneberg, T. (2013). The Munich ChronoType Questionnaire for Shift Workers (MCTQShift). Journal of Biological Rhythms, 28(2), 130-140.
Roenneberg, T., Kantermann, T., Juda, M., Vetter, C., Allebrandt, K. (2013). Light and the human circadian clock. Handbook of Experimental Pharmacology. 217, 311-331. Springer-Verlag Berlin Heidelberg.
Vetter, C., Juda, M., & Roenneberg, T. (2012). The influence of internal time, time-awake and sleep duration on cognitive performance in shift-workers. Chronobiology International, 29 (8), 1127-1138.
Vetter, C., Juda, M., Lang, D., Wojtysiak, A., & Roenneberg, T. (2011). Blue enriched office light competes with natural light as a zeitgeber. Scandinavian Journal of Work, Environment, and Health, 37(5), 437-445.
Juda, M. (2010).The importance of Chronotype in Shift Work Research. Doctoral Dissertation, Ludwig-Maximilians-Universität, Munich.
Kantermann, T., Juda, M., Vetter, C., & Roenneberg, T. (2010). Shift work research: Where do we stand? Sleep and Biological Rhythms, 8(2), 95-105.
Kantermann, T., Juda, M., Roenneberg, T. (2007). The human circadian clock’s seasonal adjustment is disrupted by daylight saving time. Current Biology, 17, 1996-2000.
Roenneberg, T., Kühnle, T., Juda, M., Kantermann, T., & Allebrandt, K. (2007). Epidemiology of the human circadian clock. Sleep Medicine, 11(6), 429-438.
Juda, M., Muench, M., Wirz-Justice, A., Merrow, M., & Roenneberg, T. (2006). The biological clock and sleep in the elderly. Zeitschrift fuer Gerontopsychologie & –psychiatrie, 19 (1), 45-51.