Low back pain is a common condition, second only to the flu in terms of incidence. According to statistics, almost 80% of adults have experienced low back pain in their lifetime. Long-term stress overload on the lower back is the main cause of chronic low back pain. What we often call low back pain has several explanations from doctors, it may be a muscle strain caused by long-term fatigue, it may be a rupture of the protective layer between the lumbar vertebrae caused by excessive pressure, resulting in nerve compression, or it may be due to degeneration of an area of injury and pathological proliferation of its surrounding tissues to achieve balance. In short, know where we are injured is not the purpose, just to be more aware of what is injured, in the health of the body for a rainy day is the fundamental way to care for the lumbar spine. Lumbar disc herniation and bulge: the lumbar intervertebral fibular ring that plays a protective role between the rupture, the vertebral material irritation, compression of nerves. Superficial rupture is bulge (lighter), deep rupture is protrusion. Lumbar muscle strain: fatigue of the muscles of the lumbar back after prolonged tensing and stretching, resulting in injurious inflammation. Lumbar spine hyperplasia: degeneration of the lumbar intervertebral disc due to long-term injury, the vertebral body then undergoes pathological hyperplasia, commonly known as bone spurs. Lumbar spinal stenosis: In addition to congenital factors, degeneration of the intervertebral disc can also cause the spinal canal to be narrowed to varying degrees before and after, compressing the nerves. Five yellow light signals of “premature” spine warning 1, low back pain is the most common and most easily detected clinical manifestation. The pain lasts for several days or years. The pain is felt deeper in the area, aggravated by activity and reduced after bed rest. 2. Numbness of the big toe When putting on shoes, it usually relies on the force of the big toe, so there is a lack of force when putting on shoes, walking, or even toe dragging, and sometimes there is numbness of the back of the foot or the palm of the foot, etc. 3, leg pain The performance of a leg (a few people are two legs) pain, numbness, cold, hot swelling, about 98% of the lumbar disc herniation symptoms of leg pain. 4, waist easily sprained waist is easy to be “stretched”, just bending over to take something or wash your face, get up to fold the quilt on the occurrence of lumbar pain, probably not muscle strain but the signal from the lumbar intervertebral disc. 5, scoliosis If you find that the spine becomes twisted left and right, even without the symptoms of lumbar pain, it may be a pre-symptom of lumbar spine pathology. Note: back injury most “pain” 5 kinds of people sitting work, often drive, long-term bending or waist in a fixed position work, super waist thin women, most likely to cause acute and chronic injury to the lumbar muscles and intervertebral discs. So these people should always pay attention to the correct posture of the waist, to prevent overwork, to prevent trauma to the waist and cold, to strengthen the waist muscle exercise.