Circadian RhythmBehavior, AnimalFeeding BehaviorEnergy MetabolismLipid MetabolismSocial BehaviorHealth BehaviorBehaviorSexual BehaviorSexual Behavior, AnimalPeriodicityBiological ClocksChild BehaviorExploratory BehaviorSuprachiasmatic NucleusAdolescent BehaviorMetabolismMotor ActivityPeriod Circadian ProteinsTime FactorsMaternal BehaviorGlucoseChild Behavior DisordersPhotoperiodCircadian Rhythm Signaling Peptides and ProteinsActivity CyclesBehavior TherapyLiverSleep Disorders, Circadian RhythmCircadian ClocksStereotyped BehaviorModels, BiologicalCLOCK ProteinsBrainAggressionAlpha RhythmAgonistic BehaviorAtrial FibrillationRisk-TakingChoice BehaviorLightKineticsRats, Sprague-DawleyNesting BehaviorDarknessARNTL Transcription FactorsBiotransformationOxidation-ReductionAnalysis of VarianceSelf-Injurious BehaviorMicrosomes, LiverAppetitive BehaviorMetabolic Networks and PathwaysCytochrome P-450 Enzyme SystemNeuronsChronobiology DisordersGlycolysisDrinking BehaviorPredatory BehaviorSocial Behavior DisordersChromatography, High Pressure LiquidMice, Inbred C57BLMutationLocomotionBody TemperatureBehavior, AddictiveRNA, MessengerImpulsive BehaviorMolecular Sequence DataGene Expression RegulationDose-Response Relationship, DrugSleepOxygen ConsumptionElectric CountershockMetabolism, Inborn ErrorsBody WeightFatty AcidsEatingIllness BehaviorQuestionnairesDietSignal TransductionInsulinPhenotypeCompulsive BehaviorRisk Reduction BehaviorLactic AcidConsummatory BehaviorCells, CulturedElectrocardiographyCryptochromesMagnetic Resonance SpectroscopyHeart RateCarbon IsotopesMice, KnockoutCarbonCarbon RadioisotopesGene Expression ProfilingDisease Models, AnimalSpecies Specificity