Heat exhaustion and heat stroke are preventable heat related illness. They are serious conditions and can lead to death if left untreated. When the heat stroke takes place due to too much exposure to the sun it is sun stroke. As victims body temperature increases, first heat exhaustion takes place and this can rapidly progress to heat stroke. During high temperatures over 40°C the body looses a lot of water and goes into a state of dehydration. In heat stroke the increased body temperature start causing damage to many organs including the brain and the Spinal Cord. This heat stroke can either be due to exertion or due to heat itself. Exertion heat stroke happens when long exercises are done in warm conditions. Classic heat stroke happens when there's exposure to too much of sun and this usually happens after heat exhaustion. Elderly people and children are prone to classic heat stroke.