In cold and extreme weather, the body heat is easily lost, and in severe cases, it can even lose life. Hypothermia refers to the fact that the human body is exposed to a cold environment for a long time, resulting in greater heat loss than heat supply, which lowers the temperature of the core area of the human body, and a series of symptoms such as chills, cardiopulmonary failure, and even death in severe cases. How to deal with outdoor hypothermia in winter
The symptoms of hypothermia can be divided into mild hypothermia and severe hypothermia.
Mild hypothermia. 
In mild hypothermia, the patient will have obvious chills, involuntary shaking of muscles, enhanced thermogenic function, cold extremities and whole body, pale lips, face, fingers and toes, numbness in hands and feet, impaired judgment and orientation, thirst, dizziness, fatigue, unresponsiveness, and symptoms similar to those of a severe cold.
Severe hypothermia. In severe hypothermia, the patient will have severe chills, muscle shaking and inability to control himself, chills all over the body, bruising of the lips, face, fingers, and toes, stiffness of hands and feet, inability to write but can make sounds, inability to move but can make sounds, low response, confusion or loss, dilated pupils, and cardiopulmonary failure.
In severe cases, they will fall into a coma, and there will be irregular cardiac manifestations such as atrial and ventricular fibrillation, shallow and rapid breathing, and even cardiac arrest.
Low ambient temperature: The human body is exposed to cold for a long time, resulting in greater heat loss than heat supply.
Inadequate warmth: Not having enough warm clothing or equipment to keep the body warm.
Excessive calorie consumption: Strenuous exercise, physical labor, alcohol consumption, etc., lead to excessive calorie consumption in the body.
Disease effects: Certain diseases such as hypothyroidism, anemia, etc., can also affect the body's ability to produce heat.
Strengthen warm measures: Wear enough warm clothing, hats, gloves, scarves, etc. in cold environments.
Avoid exposure to cold: Avoid prolonged exposure to cold, especially at night and in the morning when temperatures are cold.
Maintain proper exercise: Proper exercise can promote blood circulation and metabolism, and improve the body's ability to produce heat.
Avoid alcohol: Drinking alcohol reduces the body's ability to produce heat and circulate blood, which can easily lead to hypothermia.
Seek medical attention: If symptoms of hypothermia occur, seek medical attention promptly**.