Many birds and mammals drastically reduce their energy expenditure during times of cold
exposure, food shortage, or drought, by temporarily abandoning euthermia, ie the …

This article reviews the literature on the circadian rhythms of body temperature and whole-
organism metabolism. The two rhythms are first described separately, each description …

Circadian rhythms influence most of our life activities, notably getting up and going to sleep
every day. The new edition of this book delves into the mechanisms surrounding how these …

The last 'hibernation book'was published in 1982, nearly 40 years ago, so clearly an update
was needed. The options were a book written by a single author or an edited book written by …

Many birds reduce rest-phase energy demands through heterothermy, physiological
responses involving facultative, reversible reductions in metabolic rate and body …

Recent years have seen a rapid increase in the number of Afrotropical endotherms known to
avoid mismatches between energy supply and demand by using daily torpor and/or …

Torpor and reproduction in mammals and birds are widely viewed as mutually exclusive
processes because of opposing energetic and hormonal demands. However, the reported …

A major focus in the study of endothermic thermoregulation has been the description of
thermoregulatory patterns used by various species and/or populations. Compared with …

Hibernation and daily torpor (heterothermy) have long been assumed to be adaptive
responses to seasonal energy shortage. Laboratory studies have demonstrated that food …

Many studies have shown that endotherms become more heterothermic when the costs of
thermoregulation are high and/or when limited energy availability constrains …