Summer is time when our body reacts to the higher temperature in the way it tries to reach the homeostasis and to keep the body temperature below 37 in order to make all body functions perform normally. On the temperature of 40 degrees even the healthiest body will yield. Our body, among other reactions, will tend to liberate itself from the excess heat by sending more blood on the surface in order to cool the skin, which means that less blood is sent to the brain, organs and muscles.