Turn it off and on again: characteristics and control of torpor [version 2; peer review: 2 approved, 1 approved with reservations, 1 not approved]
Torpor is a hypothermic, hypoactive, hypometabolic state entered into by a wide range of animals in response to environmental challenge.This review summarises the current understanding of torpor.We start by describing the characteristics of the wide-ranging physiological adaptations associated with torpor.Next follows a discussion of thermoregulati