General weakness without energy that is weakness, is one of the most common clinical symptoms, is a non-specific fatigue feeling. The most common causes are: 1. poor rest, overwork, staying up late, lack of sleep, neurasthenia patients are more common. 2. dietary reasons, hunger, diet is too light, malnourished people will appear the symptoms of weak limbs. 3. the role of drugs, cold medicine, benadryl and other drugs can make people feel weak limbs. 4. liver lesions. The liver can help the metabolism of sugar, protein and fat, after the appearance of lesions, such metabolism is abnormal, the body’s energy supply is insufficient can lead to a sense of weakness. 5, Chinese medicine people with weak qi and blood or heavy dampness.