Weather and infradian rhythms in self-reports of health, sleep and mood measures.

Some individuals exhibit significant and sustained periodicities in their self-reports of physical well-being, mood, hours of sleep, anxiety and cognition. These infradian rhythms may be related to weather variables such as solar flux, barometric pressure, temperature and humidity. The time of year, or season, during which self-reporting is performed may predicate the infradian rhythms and their relationship to weather.