When this symptom occurs, it may be a muscle problem or a nerve sensory problem. The muscle problems are usually the muscles of the legs, which appear due to the frequent exertion to do heavy physical labor, or people who often do physical exercise on the lower limbs, resulting in localized muscle strain or localized chronic sterile inflammation. In addition, it is also possible to do too fatiguing exercise during the day, or walking for too long, muscle fatigue, resulting in such symptoms as the muscles of the legs are very difficult to sleep at night and do not know where to put them. And nerve problems, usually the sciatic nerve problems are more common. For example, a herniated disc, lumbar spinal stenosis, or lumbar spondylolisthesis compressing the nerve roots of the lower limbs, as well as pear-shaped muscle syndrome compressing the sciatic nerve, may also lead to uncomfortable symptoms such as pulling pain, numbness, weakness, soreness and swelling of the nerves in the legs.