Stress, PhysiologicalHydrocortisoneBuffersStress, PsychologicalSalivaCorticosteroneHeat-Shock ProteinsHeat-Shock ResponseAdaptation, PhysiologicalHypothalamo-Hypophyseal SystemHot TemperaturePituitary-Adrenal SystemHSP70 Heat-Shock ProteinsHeart RateTime FactorsBehavior, AnimalGene Expression RegulationExerciseRNA, MessengerTranscription FactorsAnalysis of VarianceBiological MarkersTranscription, GeneticMolecular Sequence DataMutationSignal TransductionBlood PressureDNA-Binding ProteinsTromethamineHydrogen-Ion Concentration