1. Drinking tea after meals is unhealthy. Many people like to drink tea immediately after meals, which is actually very unscientific. Blindly drinking tea can not only play a role in health care, but even make the body worse and worse. Because tannic acid in tea can combine with iron in food to form insoluble iron salt, which interferes with the absorption of iron, it is easy to induce iron deficiency anemia after a long time. The best time for drinking tea is 65438+ 0 hour after meals. People who like to drink tea should try not to drink tea on an empty stomach, otherwise tea will dilute gastric juice and reduce digestive function, which will easily cause gastritis after a long time. It depends on the time of tonic. At 8 o'clock in the morning, the digestive system has the lowest absorption function and is most suitable for taking vitamin supplements; If iron is taken at night 19, the curative effect is better than that in the morning; The blood calcium level of human body is the lowest from midnight to early morning. Therefore, calcium supplementation before going to bed can make calcium fully absorbed and utilized. 3. 17~ 19 is the easiest time to be a mother. If you want to get pregnant successfully, choose 17 to 19 to have sex. At this time, the quantity and quality of sperm reached the peak, and the liquidity was super strong. That is to say, sperm and eggs are most likely to have love at this time, and then the ovulation time of women ranges from 15 to 19, which will help couples with fertility problems. It takes 15 seconds to wash your hands. Most people wash their hands for less than 8 seconds on average, so it is difficult to effectively remove bacteria from their hands. There are over 400,000 bacteria on one hand. If you have the habit of picking your nose and rubbing your eyes, it is very likely that bacteria will take advantage of it. When washing your hands, be sure to rub them with soap and water for at least 15 seconds. If you can't grasp the time, you can hum the song "Happy Birthday to you" twice.