My mother went on a trip recently. Why am I so sad?

Because your mother is out, you have to do many things by yourself. I miss her very much, so I am sad.

Sad, very painful in the heart, extremely sad, synonyms include grief, sorrow, sorrow. This is a negative emotion, usually caused by external injury and stimulation.

Basic explanation: [grieve] I feel very painful and feel very uncomfortable

Don’t be sad about this

When people are sad, they often feel "heartache". In fact, "sadness" should be "stomach pain" in the upper abdomen, because the secretion of gastric acid is controlled by H2 receptors in the cerebral cortex. When you are sad, the cortex is stimulated, resulting in increased gastric acid secretion, irritating the gastric mucosa, and causing pain. If combined with stomach problems, the symptoms of "heartache" will be more obvious. This is why some people cannot eat when they are sad or excited.