Carol Vergara

1 Introduction Core body temperature (CBT) is the internal temperature of the human body, which is crucial for the proper functioning of vital organs [1]. The normal CBT range varies between individuals, with recent systematic reviews identifying standard values typically between 35.73°C and 37.41°C for oral measurements. These physiological baselines are further influenced by factors such as age, as older populations often exhibit different thermal regulation capacities [2].