According to the West China Daily, the weather is getting colder and colder, and various spontaneous tropics called "magnet fever" and "infrared fever" are selling well in pharmacies. However, Mr. Wang, a citizen of Chengdu, found that the belt he bought was "effective" but made his skin red and swollen. The belt must be close to the skin to feel the heat. How does this belt heat up? After the reporter personally tested it, he found that there was a spicy taste on his tongue.

Recently, the weather turned cold, and Mr. Wang, a citizen of Chengdu, bought a "spontaneous tropical zone". Although the effect is good after using it, he always feels strangely hot. "There is a burning sensation, which is very uncomfortable." Also to his surprise, the belt must be tied to the skin to feel the heat, and it will not be hot through thin clothes. After careful consideration, Mr. Wang suspected that there was something on the surface of the belt.

This kind of belt is sold in many pharmacies in Chengdu. The instructions say that magnets and far infrared rays are used to generate heat and should be used against the skin. Yesterday, the reporter of Huaxi Daily personally tested it and found that it had a spicy taste on its tongue. Isn't "spontaneous tropical" not magnetic heat but mala Tang? The reporter further asked the physics teacher and doctor for proof. Citizen experience

It burns when you wear it, and your skin is red and swollen.

Mr. Wang, who lives in Gui Lian West Road, Chengdu, is cold. The weather has turned cold these days, and I saw some old people in the compound using "spontaneous tropical". He also bought one last weekend. That night, he tied his belt on his body. In less than half an hour, the waist really warmed up, and it was a little burnt after wearing it for a while. Take it off quickly. "I didn't expect the effect to be so good."

Inadvertently glanced at his waist, he muttered: the skin is a little red and swollen, and it feels astringent and painful, unlike simple heating. He felt something was wrong. "The weather is not as hot as usual, but irritable."

Licking the surface is spicy, and taking out the magnet can also heat it.

Yesterday morning, the reporter came to Mr. Wang's house. Tie a belt on the skin, and after ten minutes, the reporter's waist really warmed up. After taking it off, when the temperature completely cooled down, the reporter put on his belt again through a thin layer of bottoming shirt. I waited for more than an hour this time, and there was no obvious heat.

Is there anything hot on the surface of the belt? The reporter licked a few times on the side of the belt that touched the skin. Soon, there is a spicy taste on the tongue, and it is getting stronger and stronger. After a long time, my tongue still feels.

Through the outer layer, the reporter touched a round hard object with more than a dozen suspected magnets inside. So, does the magnet have an obvious effect on fever? With Mr. Wang's permission, the reporter cut open the surface layer and dug them all out. After testing, it is indeed a magnet. Subsequently, the reporter once again tied this belt without magnets to the skin. After a while, the waist is also hot, and there is no difference in heat. Pharmaceutical investigation

I can't tell the principle of fever. I don't admit that there are peppers.

Yesterday afternoon, the reporter visited several pharmacies in the city. This kind of "spontaneous tropical" is sold in most pharmacies, and the price is around 100 yuan to 150 yuan. In a shop on Shudu Avenue, I saw a reporter consulting, and the salesman took out one and said that it sold well after the weather was cold, and most of them bought middle-aged and elderly people. Unpacking the package, the reporter saw in the manual that the heating principle was hardly mentioned, only that it came from the heating layer and had a magnet or far infrared effect. All the instructions did not say whether it contained pepper, but they all told that it must be used in direct contact with the skin.

When the reporter asked him why he had a fever, the salesperson couldn't tell. But when asked if it might be coated with pepper, all the salespeople didn't believe it. "Oh, no, they are all from regular manufacturers." After the reporter licked the belt, he also tasted the spicy taste.

Magnets have small heat, and peppers can also "heat up"

So, is the secret of this "spontaneous tropical" pepper? The reporter consulted the physics teacher and the doctor of traditional Chinese medicine.

Lv Xiaoke, a physics teacher in an experimental middle school in Chengdu, said that the magnetic field formed by the interaction between magnets and some minerals that can emit far infrared rays can indeed produce certain thermal effects. However, with the number of magnets and mineral particles on the belt, the heat generated is very small, and it is impossible to reach the degree of scorching. In addition, the magnetic field and far infrared effect will not be affected by the thin clothes. If the heat of the belt comes from magnets or far-infrared minerals, the heat will not fade too much after wearing the bottoming shirt.

Wang Mei, a doctor of traditional Chinese medicine in Chengdu No.7 Hospital, said that he had heard of this "spontaneous tropical zone", but he was always skeptical. He didn't use it in the hospital. He usually used baking lamps and plasters as a means of hyperthermia. "To be sure, peppers can also produce a' hot feeling'." Wang Mei said that human skin can reach about 40 degrees Celsius under the cover of clothes. At this time, if you contact pepper for a long time, you will have an allergic reaction and a tingling sensation. In the perception of the skin, this tingling sensation is no different from the heat sensation, and the body will mistakenly think that the burning pain is a fever. She suggested that if the skin is red, swollen and painful, you should stop using this belt.

The staff of Chengdu Industrial and Commercial Bureau responded that whether this "spontaneous tropical" involves false propaganda needs to check the real thing to confirm whether the function is consistent with the leaflet. If not, it will be investigated and dealt with later. Huaxi Dushi Bao reporter Wang Jingyi Photography Yang Tao