After eating in a restaurant, people usually stay in their seats for a period of time to continue their conversations or slow down their eating pace to extend the time spent talking. With the arrival of hot summer, people have more opportunities to dine out to avoid the discomfort of cooking at home. Environmental experts remind us that it is not advisable to linger in restaurants. This is because restaurants are filled with various smells such as food, alcohol, cooking fumes, grilled meat, sweat, and cigarette smoke. Many of these gases are harmful on their own, and when they mix together, they can undergo chemical reactions and produce harmful substances to the human body. In addition, due to the large number of people and poor ventilation conditions in restaurants, harmful odors cannot be promptly eliminated, and can only be absorbed by people indoors through breathing.
The main sources of air pollution in restaurants are as follows: the large flow of people leads to a large number of bacteria and other microorganisms entering the indoor air; the decoration materials emit various harmful substances such as formaldehyde and phenol, some of which are even carcinogenic; indoor equipment such as humidifiers bring in various bacteria; harmful substances discharged from human metabolism; nitrogen oxides and carbon monoxide generated during cooking; smoke from smoking, etc. Restaurants have a high population density and require a large amount of oxygen. Restaurants that serve barbecue and hotpot dishes have more serious oxygen deficiency problems.
Restaurants use air conditioning to regulate the temperature, and most air-conditioned restaurants adopt sealed management, generally lacking ventilation facilities. When dining in a restaurant, many harmful substances in the air enter the body through the respiratory system, or enter the body through food and drinks, posing a risk to human health.
Staying in a restaurant for too long may cause symptoms such as dizziness, nausea, fatigue, and drowsiness, and may also induce chronic diseases such as asthma and bronchitis. To stay healthy, it is advisable not to linger in restaurants.
Tips from the editor:
Sitting makes people feel comfortable, so many people like to sit. There is a saying, "Don't sit on stones in winter, don't sit on wood in summer." Sitting on a stone bench in winter allows the cold to invade the body and can lead to metabolic disorders, especially affecting the kidneys. In summer, sitting on wooden chairs that have been exposed to rain for a long time may emit moisture despite appearing dry on the surface. Sitting on them for a long time can lead to skin diseases, hemorrhoids, rheumatism, and arthritis. Therefore, when cooling off outdoors in summer, it is best not to sit on benches for a long time.
Maintaining a sitting posture for a long time can have many harmful effects on the body:
1. It may cause muscle soreness all over the body, stiff neck, headaches, and worsen lumbar and cervical spine diseases.
2. It reduces blood supply to the chest, further impairs heart and lung function, and exacerbates cardiovascular and respiratory diseases in middle-aged and elderly people, such as emphysema and persistent infections.
3. It can lead to psychological depression, unexplained anger, poor mental state, and a gradual decrease in interest in the outside world, eventually leading to a complete lack of interest.
4. It can cause inadequate blood supply to the brain, resulting in reduced oxygen and nutrient supply to the brain, increased fatigue, insomnia, decreased memory, and increased risk of developing senile dementia.
5. It reduces the overall blood volume of the body, impairs heart function, and exacerbates cardiovascular diseases in middle-aged and elderly people, leading to premature onset of conditions such as arteriosclerosis, coronary heart disease, and hypertension.
6. It can cause a decrease in intestinal peristalsis, reduced secretion of digestive juices by digestive glands, and symptoms such as loss of appetite, bloating, constipation, and indigestion.
7. It can cause prolonged congestion of the veins near the rectum, aggravate blood stasis, and worsen hemorrhoids, leading to symptoms such as rectal bleeding and anal fissures.
