Back and leg pain is one of the common pains that plague people, so is there any way to prevent it? The answer is yes. Adopting the correct posture in daily life and work can help prevent low back pain. 1, sitting posture: waist should be straight, legs flat on the ground, do not a posture for too long, half an hour to get up and walk around. If you need to work for a long time sitting, it is best to add lumbar support. The use of soft cushions to maintain the physiological curvature of the waist and back, to avoid frequent twisting of the body, available swivel chair to complete the body twisting action. 2, standing posture: to raise the head, chin back, shoulders straight and relaxed, the chest slightly forward, the lower abdomen straight, do not contain the back, maintain the normal curvature of the waist, so that the back muscles relax. 3, sleep position: it is best to sleep on a wooden bed with a mattress of about 5 cm, so that the back gets a complete rest. When lying on the side, the waist should be straight, the knee joint slightly flexed. Supine when the waist can be placed between the towel roll to maintain the waist curvature. Turn around when you get up, then put your feet on the side of the bed and support your body with hand force. 4, the posture of extracting heavy objects: first sit low hip, one foot in front of the other in the back, and bend the knee, keep the back straight, pay attention to the arm and elbow close to the body, the object should also be as close to the body. Hold the object firmly in your hands and use your hands to carry the weight. When lifting heavy objects, the movement should be consistent and slow, avoiding sudden movement and stopping, using the body weight to lead, and then using the foot force to support, lifting the heavy objects.