The feeling of sleeping with no energy in the legs is considered to be a sign of calcium deficiency, which may also be caused by varicose veins in the lower limbs and spinal nerve root injury. It is recommended to seek medical attention in a timely manner, after a clear diagnosis under the guidance of a doctor for targeted treatment.1, calcium deficiency: picky eating, lack of outdoor exercise and other factors can lead to calcium deficiency, common symptoms include excessive sweating, mental irritability, general weakness, joint pain, etc., but also sleep is always leg weak very uncomfortable feeling. In daily life, it is recommended to eat more calcium-rich foods, such as seaweed, seaweed, spinach, etc., and to go out in the sun in sunny weather to promote the absorption of calcium. You can also take calcium drugs under the guidance of doctors, such as calcium gluconate oral solution; 2, varicose veins of lower limbs: varicose veins of lower limbs may be caused by factors such as sedentary or standing, venous reflux, etc. There are no obvious symptoms in the early stage, and as the condition worsens, there will be skin edema, pigmentation, which may be accompanied by local itching, skin atrophy and other symptoms, and even the feeling of sleeping with no energy in the legs is difficult. If the patient’s symptoms are obvious and affect normal life, it is recommended to undergo surgery as soon as possible. Common surgeries include high ligation, vein stripping and excision, and subfascial traffic branch ligation. After surgery, pay attention to the prevention of complications, keep the affected limb elevated, and use elastic bandages during labor; 3, spinal nerve root injury: spinal nerve root injury is a local nerve injury caused by neurological dysfunction, which may be clinically manifested as a feeling of difficulty in sleeping with no strength in the legs. Under the guidance of a doctor, adrenocorticotropic hormone treatment, such as dexamethasone sodium phosphate injection, severe symptoms can be treated with spinal surgery.