Walking backwards 15-30 minutes a day is the most appropriate, it is recommended that every other day exercise 1 time, 4-5 times a week, the specific situation varies from person to person, can not be generalized. Walking backwards is a healthy way to exercise, can be a good exercise back muscles, reduce the production of lumbar disc herniation. People walk backwards when the center of gravity will shift backwards, the perception of space perception will decline, easy to fall, if the exercise time is too long, will aggravate this phenomenon, so the best daily backwards walking time in 15-30 minutes better. Because the movement that lasts more than 15 minutes for aerobic exercise, aerobic exercise is a more healthy way to exercise. And 30 minutes or less of slow walking exercise intensity is not great, too long will increase the amount of load on the knee joint. In addition, when walking backwards also need to pay attention to avoid wearing high heels or slippers, so as not to sprain the ankle. At the same time, osteoporosis or in the acute attack of lumbar disc herniation patients should avoid walking backwards to avoid the danger.