A, walking speed is very slow warning: short life span Researchers at the University of Pittsburgh, the United States, a combination of nine studies to make a summary: the speed of walking can be a good predictor of life expectancy, in people over 75 years of age is relatively more accurate. The average person walks at a speed of 0.9 meters per second, those who walk at a speed of less than 0.6 meters per second will increase the likelihood of death, while those who walk at a speed of more than 1 meter per second live longer. Second, walking arm does not shake Early warning: there are problems under the back Physiologists believe that when walking the left leg forward, the spine will rotate to the right, and the right arm will swing. If someone is walking when the arm does not swing much, it may mean that his back is restricted, prone to back pain and injury. Third, the palms of the feet first beat the ground Warning: herniated disc or stroke The former president of the American Podiatric Association believes that healthy people step, the first heel contact with the ground, if someone walking is the palms of the feet first beat the ground, mostly due to its weak muscle control power, which means that may be a stroke attack or herniated disc, compression of the nerve caused by impaired muscle nerve function. Fourth, the step length is small Early warning: knee bone degeneration The moment the heel touches the ground, the knee should remain straight. If this is not the case, it means that the mobility of the kneecap or the ability to stretch the hip may be limited, and this functional degeneration can be solved by massage and massage. Five, rotund legs Early warning: osteoarthritis Plastic surgery experts believe that this gait is usually due to knee arthritis, up to 85% of the population is more or less suffering from this orthopedic disease, usually caused by bone loss due to aging, if serious, can be corrected by brace. Sixth, the inner eight warning: rheumatoid arthritis This inflammatory disease causes an inner eight gait, and 85% of people with rheumatoid arthritis will exhibit this feature. It is medically known as valgus or valgus foot, which is characterized by an inability to straighten the lower leg and a bending to the outside. This gait is very distinctive and looks awkward, with both knees together and the ankle turned out. Seven, tiptoe walking Early warning: possible brain damage Walking on tiptoe with both feet is associated with muscle tension, which can also occur when the spine or brain is damaged. It is important to note that children who are just learning to walk tend to have this gait temporarily and there is no need to worry about it. If it persists, take your child to a pediatrician for a screening.