Some environmental departments have also conducted tests. Because of the high content of negative ions in the air in these places, people feel energetic. Above 5000. Once the organism is not supplemented with negative ions, it will affect normal physiological activities, resulting in chest tightness, dizziness, and even illness.

Finally, negative ions can also enter the lungs through breathing, and directly stimulate various tissues of the human body, as well as the interaction of nerve reflexes and body fluids, which have a neutralizing physiological health care effect on the human body. In different regions, the number of negative ions in the air is quite large. The virus loses its ability to attack living cells. However, in some densely populated cities, the concentration of negative ions is relatively low due to serious air pollution.

The negative ion hair dryer has a health care effect. Some people have measured it. The electrical activity of the body's tissues needs to be maintained by the continuous supplementation of negative ions. It is relying on the continuous charging and discharging of these 'batteries'.. First of all, in a living body, every cell is like a miniature battery, with a potential difference of 50 to 90 millivolts between the inside and outside of its membrane. According to the number of negative ions contained in the air per cubic centimeter, there are about 1,000 in the countryside, 4,000 on the seashore, and up to fountains and waterfalls.

Why do negative ions have health care effects? Through research, medical experts believe that there are three reasons. In cities, there are hundreds of negative ions per cubic centimeter outdoors, and there are even fewer indoors, Hair Straighteners Manufacturers no more than 1,000! Especially there are few negative ions next to TVs and computers. Studying and working in this environment are often fatigued, which is not conducive to health

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