Now, when the athlete is training in cold environmental conditions, warm clothing and the physical exercise itself delays the core body cooling. And when body temperature falls below 95 degrees Fahrenheit or 35 degrees Celsius, it is referred to as hypothermia. And this means the thermal regulatory mechanism has trouble keeping pace with the heat loss. Symptoms include lack of coordination, mental confusion, slowed reaction, and lack of energy. And most of the problems faced by athletes in cold weather, that you'll be dealing with, are usually numb hands due to reduced nerve activity. And there is also reduced blood flow to the fingers due to vasoconstriction of the blood vessels. Numbness affects performance of skills such as throwing and catching. And exposure of skin and underlying tissues on the nose, ears, cheeks, and fingers, and toes may lead to frost bite, and your endurance runners, if they're out running in cold weather, need to have a hat. You can acclimate to cold as well. Acclimation to cold usually begins after seven days. Cold acclimated athletes maintain a higher hand and foot temperature than those who are not acclimated. Advise your athletes to wear multilayered clothing with adequate ventilation so heat storage and sweating is minimized, and change the clothing quickly after the end of training. And water, such as sweat accumulation or rain, magnifies heat loss. Cold weather clothing that is wind resistant with adequate ventilation helps minimize the cooling effect of sweat accumulation. A cold wind removes the layer of heat from around the body, and for this reason, wind accelerates body cooling. Now, long term breathing of cold air can increase the respiratory passage secretions and decrease the mucus clearance. And this potentially produces airway constriction. It also impairs lung functioning. And for many people, cold air also restrict the bronchioles. And this stimulates a form of cold-air induced asthma. [BLANK AUDIO]