There is a big blister on the soles of your feet. Others say it is flat feet. Is that so?

Blisters have nothing to do with flat feet. I have flat feet, too, but my shoes won't blister when they fit. Do you think there is an arch under my feet? Not if you have an arch. If you are completely flat, your feet will be flat. When your feet are flat, it will affect your normal walking. Some people will feel bad about your feet, others will feel no pain, so you don't need treatment. If your feet hurt, you must pay attention to them. If you can't walk, you must have an operation. If you can walk, your feet will only hurt if you walk for a long time. Wear a pair of heel shoes, high before the meeting and low after, and your center of gravity will move back at any time. Find a book, and you can also experience the effect of heel shoes. A book with a thickness of two centimeters, with the forefoot stepping on the book and the heel stepping on the ground, will move the center of gravity backward, simulating negative heel shoes. Heel shoes are now the content of college textbooks, with invention patents, which is an amazing scientific and technological progress.