Homeothermy: Homeothermy is thermoregulation that maintains a stable internal body temperature regardless of external influence. This internal body temperature is often, though not necessarily, higher than the immediate environment (Greek: homoios = "similar", thermē = "heat").Shivering: Shivering (also called rigors or shuddering) is a bodily function in response to early hypothermia or just feeling cold in warm-blooded animals. When the core body temperature drops, the shivering reflex is triggered to maintain homeostasis.Permissive temperature: The permissive temperature is the temperature at which a temperature sensitive mutant gene product takes on a normal, functional phenotype.http://www.Cold shock response: Cold shock response is the physiological response of organisms to sudden cold, especially cold water.Depyrogenation: Depyrogenation refers to the removal of pyrogens from solution, most commonly from injectable pharmaceuticals.Rabbit feverFishpaper: Fish paper or fishpaper is a strong, flexible, fibrous dielectric paper. It resists moderate heat and mechanical injury, and is often used for wrapping coils and insulating stove-top parts.Midnight: Midnight is the transition time period from one day to the next: the moment when the date changes. In ancient Roman timekeeping, midnight was halfway between sunset and sunrise, varying according to the seasons.