Running left lower limbs do not sweat usually do not rule out is not enough exercise intensity caused by, it is recommended to increase the appropriate amount of exercise, if it is caused by anhidrosis, it is recommended to take medication for treatment. 1. Exercise intensity is not enough: If the exercise intensity is not enough, or the exercise time is too short, resulting in less heat produced by the body, there will be the symptom of running left lower limbs do not sweat. Usually after a proper increase in exercise can be normal sweating, without special treatment. 2. Anhidrosis: If the sweat glands are underdeveloped, it will lead to no sweating in the left lower limb of the runner and the body temperature cannot be balanced. With the passage of time, the damage to internal organs is relatively large, and at the same time the lack of sweating also means that the pores are blocked. It is recommended to take vitamin A soft capsule, thyroid tablets and other medications for treatment under the guidance of a doctor, which can stimulate the secretion of sweat glands. In daily life, if the symptoms of running left lower limbs do not sweat should be timely medical care, clear reasons, targeted treatment.