Every year, when buying shoes, I increasingly notice how pseudo-hipster designers pervert new shoe models, making them worse and worse. Moreover, marketers present all this under the sauce of new fashion trends. Sometimes there are such harmful models for the foot (see photo below) that you want to give them a slap on the creator and all those who promote this crap.
I'll tell you why this is important. The function of our foot is not only supportive, but also sensory. When we take a step, the afferent (sensory) neurons of the skin of the foot transmit information to the brain about the surface on which we stepped. The more this information, the more all sorts of muscles stabilize the foot and the whole body are activated! When there is not enough information for the brain (there is no "feedback" from the foot), then the necessary muscles that should cushion the step by raising the arch of the foot are not activated.
Moreover, it seems to me that flat feet are becoming more common every year. For example, now on the street there are many people with a "cow gait" in exactly such bad shoes. Which, IMHO, did NOT even happen (and I'm not that old 
) in my childhood.
That is why choosing the right shoes and foot load regime is an important nuance, especially for children and teenagers. For example, here are my rules for choosing shoes:
The sole of the shoe should be fully bendable , and the inner side should repeat the relief of a healthy foot. No heels, high platform. Yes, I understand that there are exceptions in the form of shoes, etc. But I try to wear such shoes for a maximum of a couple of hours.
The toe of the shoe should not be narrowed . The toes inside the shoe should be in almost the same position as without it.
Shoes should not hang loosely on the foot. Crocs and flip-flops should not be worn all the time! Only on occasion - to the beach, to the pool.
Forget about orthopedic insoles and other “crutches” that orthopedists and other “literate people” force on you. This will not fix existing foot problems.
In addition, try to walk barefoot as much as possible. For example, at home, walk only barefoot, no slippers.
If you live near the beach, walk barefoot on the sand. Here is a link to a study that confirms my words: https://pubmed.ncbi.nlm.nih.gov/34838002/ In the photo below are examples of bad shoes and good ones (which I wear myself) .
Shoes from “fashionable” brands for sheep (Nike, Puma, Adidass) are almost all bad. Don’t buy them, you are paying a lot of money for harm to your feet! What are the soles that are impossible to bend worth. But from companies that advertise less (merrel, cat, columbia), there are good models of shoes (although I notice notes of degradation and “fashionable” trends in them too)
