I think it is more popular in our hometown to go to the park first, and then to "bump into trees" instead of sneaking around. As long as you stand in one place, leaning against a tree on your chest or bumping into a tree on your back, of course, you can refer to the general column without a tree. Pay due attention, the inconvenience of legs and feet will not affect your aerobic exercise. It is advisable to sweat for 30-40 minutes every day, and then consider aerobic exercise when your knees are thin.