Physical fatigue and listlessness are the daily state of many people, and outsiders look tired and lazy, but in fact, long-term fatigue is likely to be a warning sign from the body.
What causes fatigue?
Sedentary. When sitting for a long time, the body maintains a posture for a long time, the muscles are more likely to fatigue and tension, and as the posture gradually deforms and distorts, it is also easy to cause low back and joint pain.
Stay up late. 
People who stay up late are prone to endocrine disorders, coupled with insufficient rest, the overall body function will be affected, and fatigue and weakness are one of the common consequences of staying up late.
Inadequate hydration. Water is very important for the human body, especially during intense physical work or in hot environments such as summer.
Too much stress. Although stress cannot be seen or touched, it really interferes with the body's hormone secretion and mental state, which not only causes fatigue and fatigue, but also can become the driving force of a variety of chronic diseases.
Liver disease. The liver is the metabolic center of the body, and fatigue is one of the most common symptoms in patients with liver disease, and it may continue to worsen as the disease progresses.
Malignancy. Malignant tumors will plunder a large amount of nutrients for their own proliferation, and the normal cells of the human body cannot be replenished, so there are often cases such as emaciation and fatigue.
Although fatigue is a common phenomenon and easy to be overlooked, it may indicate health risks, so people with long-term fatigue should also pay attention to it in time.