Guide
As a qualified "anti-aging master", how can you not know the ever-changing life extension technology?
Pay attention to the time school to chase the new express column, here contains the freshest life extension information, take you to the first time to link the world's cutting-edge longevity technology trends.
What does itching feel like?
When you are bitten by a mosquito, you may experience a sensation called "itching", but if you are asked what exactly is itching, you may not be able to answer. In fact, scientists have long been studying itching, and in 1897, a famous psychologist named Stanley Hall first defined "itch", and he divided the itch into two types.
The first is a milder, annoying itch called "knismesis," which refers to a peculiar itching sensation that occurs as a result of physical contact (for example, a feather or someone's fingers gently sliding over the skin). This sensation may last a few seconds longer than the stimulus and creates a strong desire to scratch or rub in the itchy area, as doing so helps relieve the itchy sensation.
The second is a heavier, laughter-inducing itch called "gargalesis," which is usually an itch that repeatedly stimulates specific areas of the body (such as the soles of the feet and armpits), such as the itch produced by scratching the soles of the feet.
Why do we feel itchy?
Physiologically speaking, itching is due to the fact that after being stimulated, the nerve endings in the skin send signals to the cerebellum, which responds and exercises accordingly. So the itch actually comes from your cerebellum's response to the unexpected feeling of someone scratching you.
There are also clear differences between these two different types of itching. The first type of itch can be generated by stimulating itself. But the second kind of itch can't, you can't laugh at yourself through stimulation, and at most you can only fake laughter.
Therefore, scientists speculate that knismesis (the first type of itch) may have developed into an evolutionary mechanism that prompts you to immediately rub or scratch the area, thus clearing the body of parasites or insects.
Why can tickle therapy delay aging?
Based on research on itching, scientists have found that tickling therapy may be an effective way to combat certain signs of aging.
With the continuous increase of age, people will slowly move towards aging, and the aging process is accompanied by the degradation of autonomic nervous system function. The autonomic nervous system refers to the parts of the nervous system that control involuntary events, such as digestion, myocardial activity, and breathing.
The autonomic nervous system can be divided into two branches: the parasympathetic and sympathetic nervous system. They are antithetical, with the parasympathetic nerve primarily the physiological need to maintain a state of quiet, while the sympathetic nervous system is responsible for physiological regulation in a state of tension or stress.
Aging means a significant decrease in parasympathetic activity, while sympathetic activity is significantly enhanced. This change can be harmful to heart and gastrointestinal function. In addition, it will also affect people's overall mood, making the elderly more likely to suffer from depression.
Previous studies have shown that electrical stimulation of the vagus nerve of the parasympathetic nerve helps treat age-related conditions such as depression, obesity, epilepsy, stroke, heart disease and tinnitus. The tickling therapy has an effect similar to that of electrical stimulation.
A recently published study showed that elderly people aged 55 years or older who received up to two weeks of itching (tickling) treatment strengthened the autonomic nervous system, promoted better sleep, regulated mood and improved quality of life. In other words, the researchers believe it slows down the signs of aging in the autonomic nervous system.
Pai Pai believes that the tickle here should be a mild tickle, should be closer to the massage, not always scratch the skin, otherwise the skin will become red, or even bleeding, causing inflammation will be more than worth the loss.
In addition to tickling therapy, which stimulates the vagus nerve, calorie restriction can also stimulate the vagus nerve. So how do we scientifically limit calories? You can pay attention to our time pie, we have reported a number of related studies on calorie restriction, found that in the premise of ensuring adequate nutrients to reduce calories by 10%-30% has the best effect, beginners can first consider limiting 10% calories to adapt to it.