With prolonged and strong exposure to low temperatures, the metabolism changes, the vessels of the fingers and toes, and the skin of the face narrow, local and general cooling of the body occurs (possibly even frostbite), a person’s working capacity decreases, and colds occur.
When the body is exposed to high temperatures, blood pressure decreases, the chemical composition of the blood changes, the body’s water-salt metabolism is disturbed, and heatstroke is possible. High air temperature also adversely affects the functions of the digestive system and causes a person to fatigue quickly.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.