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Low back pain (LBP) is very common and 80 to 90 percent of the people suffer from it in their life at least once. It comes in all ages both in sedentary workers and physical labourers. It is also very common in sports persons (gymnasts, football players, weightlifters, wrestlers). Sedentary workers who have to sit for prolonged periods in the same posture have more back pain. Pressure in the sciatic nerves—the nerves which arise from the lumbar spine and supply the legs (sciatica), is also very common (10 to 40 percent of the population). It is more common in the aged especially in those who do not perform physical activity or exercise due to which their muscles start deteriorating with age. Regular moderate exercise maintains the strength and flexibility of the back muscles and prevents back pain.
