When the human body is exposed to heat stress, either environmental external stress, the body attempts to maintain the above heat balance using a number of thermoregulatory mechanisms such as body core temperature, skin temperature, and heart rate (HR).[2] Prolonged exposure to high temperature and humidity can cause health dangers such as heat cramps, heat syncope, heat exhaustion, and heat stroke.[3] Symptom of heat exposure includes increasing the risk of accidents and decrease in productivity in work places