疲劳不是什么新鲜词,常常听到身边有人抱怨“很累”。医学上将疲劳定义为器官或机体过度劳动导致的症状,表现为人体生理、心理功能的减退和周身出现不适感。经常感觉到累的话,会对生活和工作有很大影响。对于健康人来说,劳累后身体感觉疲劳是正常现象,通过休息后可以逐渐恢复。但累不仅限于身体的疲劳感,大脑也会感觉“累”。用脑过度可能会 Fatigue is not a new word, often heard around people complain “tired ”. Medical fatigue is defined as the symptoms of organ or body caused by excessive labor, manifested as the body’s physiological and psychological decline and body discomfort. Often feel tired, it will have a great impact on life and work. For healthy people, it is normal for the body to feel tired after exertion, and gradually recover after rest. However, tired not only to the body’s sense of fatigue, the brain will feel tired . Brain may be over