Lumbar sleepiness, leg weakness, weakness is mainly due to the following two reasons: the first situation is due to the lumbar itself there are lesions, such as lumbar disc herniation, lumbar spinal canal and nerve root canal stenosis, may produce extrusion stimulation of the nerve root, which leads to lower limb innervation abnormality, it is prone to the symptoms of leg weakness, weakness, and due to the lumbar itself there are diseases after the serious foci, the peripheral nerve stimulation, it will lead to lumbar soreness, weakness and feel lumbar symptoms. Peripheral nerve stimulation, will lead to lumbar soreness, weakness, and the symptom of lumbar sleepiness. The second situation is due to the waist and legs for strenuous exercise, will cause the body to produce more inflammation and lactic acid and other metabolites, after the cold will lead to local metabolite accumulation more and more, will produce peripheral nerve stimulation symptoms, resulting in the waist and legs will appear to be sleepy, aching, weakness symptoms.