Symptoms of brain fatigue manifest as the entire mental state burnout, thinking becomes slow, action becomes slow, language becomes slow, the peripheral body feels sluggish, does not like to talk, does not like to do things actively and actively, passive things also appear to be fatigued, doing things inefficiently, the eyes gaze is dull, and the brain becomes sluggish when thinking about problems. Patients show that they can easily miscalculate even when it is easy to add or subtract, and their near and distant memories also seem slow. When doing a task, the brain cannot be in a state of alertness, and thus becomes less efficient in doing things, and cannot finish thinking about a task quickly and effectively.