The daily alternation between sleep and wakefulness is one of the most dominant features
of our lives and is a manifestation of the intrinsic 24 h rhythmicity underlying almost every …

A growing body of research has identified circadian-rhythm disruption as a risk factor for
metabolic health. However, the underlying biological basis remains complex, and complete …

Using a longitudinal dataset linking biometric and survey data from several cohorts of young
adults before and during the COVID-19 pandemic (N= 682), we document large disruptions …

To accommodate daily recurring environmental changes, animals show cyclic variations in
behaviour and physiology, which include prominent behavioural states such as sleep–wake …

In modern societies, human rest–activity rhythms and sleep result from the tensions and
dynamics between the conflicting poles of external social time (eg, work hours and leisure …

In 2014, Buysse published a novel definition of sleep health, raising awareness for the
importance of this construct for individuals, populations, clinical care, and research …

The Munich ChronoType Questionnaire (MCTQ) has now been available for more than 15
years and its original publication has been cited 1240 times (Google Scholar, May 2019) …

The circadian rhythm plays a fundamental role in regulating biological functions, including
sleep–wake preference, body temperature, hormonal secretion, food intake, and cognitive …

Sleep timing is controlled by the subtle interplay between circadian and homeostatic
oscillators which, according to their endogenous properties, allow beings to feel …

Many processes in the human body—including brain function—are regulated over the 24-
hour cycle, and there are strong associations between disrupted circadian rhythms (for …