The phenomenon of weakness in the legs is normal, most often, we will have weakness in the legs after exercise, but there is no need to worry too much, as long as after a good rest, it will be fully recovered. But when the body appears pathological fatigue, you need to pay attention to. First of all, pathological fatigue is a signal of certain potential diseases in the body, such as problems with the blood system and kidneys. For such people, it is best to eat more foods rich in vitamin B1, B2 and C, because these vitamins can help the body’s metabolism very well, therefore, such foods can relieve eliminate the body’s fatigue. In addition, fatigue may also be the human body to relieve acidity caused by, so to eat more alkaline food, neutralize the acidity of the human body, can effectively improve the body’s nervous system, reduce the feeling of fatigue. At the same time, if there is often weakness in the limbs, it is best to go to the hospital to measure the blood pressure, because low blood pressure can lead to weakness in the limbs, if confirmed to be low blood pressure can take some drugs to raise blood pressure. Therefore, if the body has symptoms of weakness in the limbs, it is best to find out the cause in time to determine whether it is physiological fatigue or pathological fatigue, and then treat it accordingly.