Timing and Health are not only related to societal and social demands, but also to circadian rhythms. There are two possible health-effects from timing as a social practice. One is the health effect of for example delaying sleep due to work or due to a sleepless baby. The second is that timing itself can be a source of stress. With this project Dr. Christian Bröer (Faculty of Social and Behavioural Sciences), Prof. dr. Claudi Bockting, (Amsterdam UMC / UvA Psychiatry) and, Prof. dr. Gaston Franssen (Faculty of Humanities) will start to identify target points to intervene in both of these areas.