HibernationTorporSciuridaePhodopusBody Temperature RegulationBody TemperatureMyoxidaeChiropteraSeasonsAdrenergic beta-3 Receptor AntagonistsBasal MetabolismEstivationArctic RegionsPhotoperiodEnergy MetabolismPurinergic AntagonistsMarsupialiaCheirogaleidaeTelemetrySympatryArousalHypothermiaFastingDopamine beta-HydroxylaseCold TemperatureAcclimatizationCircadian RhythmMurinaeTropical ClimateThermogenesisCricetinaeSkin TemperatureAdipose Tissue, BrownMammalsAdaptation, PhysiologicalTemperatureBehavior, AnimalReceptor, Adenosine A1LeptinOxygen ConsumptionSleep StagesFood DeprivationAppetitive BehaviorPurinergic P1 Receptor AgonistsMesocricetusSleep DeprivationBody WeightXanthinesMice, ObeseInjections, IntraventricularDeoxyglucoseFreezingReceptors, G-Protein-CoupledHypothalamusEcosystemTheophyllineTime FactorsMotor ActivityBiological EvolutionElectroencephalographyMice, Inbred C57BLMuscle, SkeletalSleep