The legs are particularly weak after waking up, which may be caused by the following reasons: 1, may be due to muscle fatigue of the lower limbs, if the patient has done excessive activities on the lower limbs before sleep, it will make the muscles of the lower limbs overworked, at this time the body will instinctively produce a self-protective reaction, will produce weakness and pain in the lower limbs, and then make the patient reluctant to continue activities, can take 2, due to the patient’s mental overstrain, for example, the patient in the process of sleep nightmares, or in the process of dreaming of long distance walking, this may cause excessive tension in the muscles of the lower extremities during sleep, after the patient wakes up, will feel special weakness of the legs. 3, due to the patient’s poor sleep quality caused by If the patient has poor sleep quality for a long time, he or she may have general weakness after waking up.