Why do we cry when we are sad

Crying when you are sad is a natural emotional reaction. When a person is emotionally excited or depressed, he or she may become sad and cry.

Being sad is also a kind of pain, which is also human instinct, because in the process of pain or sadness, it is easy to become emotionally excited, and the capillaries around the eyes will become congested, and the small muscles will contract to protect the eyes, which will cause tears in the lacrimal ducts. This is a normal physiological reaction. Most of the symptoms of tears can be improved after the mood is calmed down. However, try not to shed tears too frequently in daily life, as it will cause certain damage to the eyes. Tears can cause inflammation and colds, and certain stimulation can cause pain and swelling in the eye area, and even blurred vision. Therefore, when you are sad, you should adjust your mentality, and you can also participate in some outdoor sports, not just listening to soothing music, which can help improve your mood and avoid tears.

Try not to rub your eyes with your hands after crying, because there are relatively high levels of bacteria on your hands. Rubbing with your hands may cause conjunctivitis or keratitis.