Some people think that those who usually do physical labor do not need to do physical exercise anymore, in fact, this view is wrong. Although labor and exercise are both activities, but the form of movement of the two is very different, and the effect produced is also different. In physical labor, not all of the joints of the human limbs are in motion, which causes an imbalance in the amount of muscle activity. This is what makes the frequently active muscles particularly developed and even strained by overload. The muscles that are relatively less active gradually undergo disuse atrophy. In addition, because of the relatively fixed posture of people during labor, will also cause ligaments and joint capsule loose on one side, tight on the other side, long-term taut ligaments, like a spring elongation, will lose elasticity after a long time, and long-term loose ligaments, day after day will also be shortened and can not be extended, the result is that the joint becomes loose on one side and tight on the other, the normal stability, flexibility are damaged. Sports are different in that they overcome the shortcomings of physical labor. Exercise in a variety of forms, postures, various parts of the muscles and joints to get full activity, especially some sports are designed specifically for the side of the usual less activity, so that the usual exercise less muscle to get exercise, and tense ligaments and joints to loosen, shortened ligaments and joints more elongated, in a loose and tight movement, to enhance their flexibility. Therefore, in addition to physical work, an appropriate increase in exercise exercise, can effectively prevent and treat lumbar spondylosis.