Drinking tea after a meal is not good, tea contains tea polyphenols, improve endurance, bright eyes and eyesight, promote health. Try to avoid drinking tea immediately after a meal, tea will immediately dilute the gastric juice after entering the stomach, the food in the stomach is needed to corrode and digest the gastric juice, when the gastric juice is diluted on the digestion of food will be affected, not only will cause indigestion, but also affect the peristaltic function of the stomach. Tea contains acid, immediately after the meal drink tea, acid will hinder the absorption of calcium ions, iron ions in the food, will be combined with the protein in the food, affecting the absorption of protein in the gastrointestinal system. After eating a meal should be about half an hour before drinking tea, will not affect the digestion and absorption of food.