The common causes of limb pain, weakness and feeling tired are as follows: First, cold, general discomfort caused by viruses, weakness, lack of energy, and some people will have general body aches and pains. Cold induced by weather changes, cold, low body resistance, cold can take anti-viral drugs, such as virus or take Pancreatin and Chaihu punch, drink more water. Second, excessive exercise, fatigue, such as engaging in physical strength for too long, construction sites and soccer, excessive exercise, due to excessive exercise and physical labor leads to excessive lactic acid accumulation, the formation of weakness and limb pain. Pay attention to the amount of labor, exercise in moderation, when there is limb pain, fatigue, timely rest, drink more water, it is recommended to go to the hospital for treatment in a timely manner.