In order to maintain a healthy metabolic process, our enzymes need to be functioning at a certain optimal temperature – 37°C or 98.6°F. Body temperature is the balance between heat loss and heat production.
Body temperature can be affected by various circumstances. It changes as you get older, when you exercise, while you sleep and after consuming certain foods.
As you get older, your body temperature changes. According to a study, older people are unable to regulate their body temperatures to the same degree as younger people because their responses to changes in body temperature are altered. Therefore, normal body temperature can decline with age.
Some studies have shown that obesity may be associated with the reduction of core body temperature during daytime hours.