The most common factor is the pre-cold, whether it is wind-cold or wind-heat cold, when the cold virus or bacteria invade the organism, there will be the clinical typical symptoms of weakness and weakness. 2. The clinical typical symptoms of weakness and weakness are often caused by endocrine disorders and ionic disorders, the most common factor is periodic hypokalemia, when The most common factor is cyclic hypokalemia, which can lead to clinical symptoms of weakness and lack of energy. 3. The lack of energy and insufficient blood supply to the body is often caused by inadequate blood supply to the cerebral arteries and coronary arteries of the heart. 5. Uncommon diseases of the endocrine system may also cause weakness, such as hypothyroidism and adrenocortical insufficiency.