If people don't get enough deep sleep every night, their gray matter health will deteriorate and their memory will decline. Therefore, people should ensure enough sleep time every day to keep the normal function of the brain. In addition, people should also take the following measures to protect the brain ① aerobic exercise. If people do 15 minutes of aerobic exercise every day, the cells in the brain responsible for storing memories will continue to proliferate, thus achieving the effect of protecting the brain. ② Regular vitamin D supplementation. Vitamin D can improve the flexibility and memory of the brain and is the most needed nutrient for the brain. Sunbathing (every day 15 minutes) is the easiest way for the human body to get vitamin D.

2. Heart

The most important measure to prevent heart disease is to lose weight, especially to lose abdominal fat. This is because people with too much abdominal fat are more prone to arteriosclerosis, which in turn leads to heart disease. In addition, people are advised to take the following measures to maintain the heart ① Check blood pressure and cholesterol levels regularly. From the age of 20, blood pressure and cholesterol levels should be checked once a year. If the test results are abnormal, it is necessary to treat them in time to avoid heart involvement. ② Always eat foods rich in omega-3 fatty acids. Omega-3 fatty acids can prevent heart disease, stroke and cancer, and protect the function of cardiovascular and cerebrovascular systems, and are the most needed nutrients for the heart. This nutrient mainly exists in marine products, walnuts and some green leafy vegetables.

3. Liver

The liver has very important functions, such as storing vitamins and minerals absorbed from food and expelling toxins (such as alcohol and some pharmaceutical ingredients) from the body. Hepatitis virus infection and excessive drinking are the most common causes of liver injury. In addition, obesity can also lead to liver diseases such as fatty liver, cirrhosis and liver cancer. To protect the liver, people should take the following measures. Don't drink a lot. ② Exercise muscle strength three times a week. ③ Actively prevent hepatitis B and hepatitis C.

4. lungs

Smoking is the main cause of lung disease. Eating too much food rich in oil, especially fried food, will make people's respiratory system more laborious at work.

5. Pancreas

If people feel hungry when it's time to eat every day and never have a partial eclipse, it means that the pancreas works normally. In order to protect the pancreas, people should take some dietary fiber every day, because this nutrient can reduce the incidence of pancreatitis and pancreatic cancer. Eat more coarse grains. People who eat coarse grains every day are about 40% less likely to develop pancreatic cancer.