If you walk often, the elasticity of your shoes will soon be lost. Although it looks good on the surface, the protection is not very good, so it is best to change a pair of walking shoes every year. 2. Running: A pair of good running shoes is essential. Choosing the right running shoes depends on your weight, foot type, running style and whether you are injured. Before buying shoes, try them on and run for a while to see if they are elastic enough and fit. In addition, the sole is easier to bend. If you grab both ends of a shoe and bend it, the biggest bending part should be at the sole of your foot. The heel part should be suitable. If it is too big, it will make you unstable when running and easily damage your ankle. 3. Aerobics: You can choose a pair of multifunctional shoes, which have good sole support and can meet the needs of a small amount of running and jumping. Generally speaking, the gym is constant temperature all the year round, and you will sweat when you exercise. It is best to choose breathable and lightweight sports shoes. Changing sports shoes every year is a good way to protect joints.