Oh! It is too hot.…is a common expression in our tropical country, particularly during the summer season. Although hot or cold sensations are subjective, still we can measure the environmental and climatic factors and take preventive measures to protect ourselves from extremes of temperature since it has a profound effect on our health. Humans have Thermoregulation which maintains their body temperature within a limited range, beyond which initially there is an uncomfortable feeling but extremes of both high and low temperatures, may be fatal.
Body temperature is controlled by the Hypothalamus in our brain. It is sensitive to our core body temperature and also responds to the temperature-sensitive neurons in the skin. Body heat is generated by basal metabolic activity and muscular movements and is lost by conduction, convection, and evaporation. The normal core body temperature is 37°C+/-0.5°C and this is necessary to preserve the normal....
