The time to replace insoles during military training mainly depends on whether insoles can rebound. At the same time, pay attention to whether the forefoot is flattened and thinned. If it is thinned and flattened, it needs to be replaced immediately.

The use of 4d insoles is mainly to relieve the pressure on the feet. Long-term gravity extrusion will gradually make the insole thinner and lose its cushioning effect. If you continue to use it without replacing it, it will easily increase the risk of spraining your ankle and aggravate foot fatigue, which is a disaster for students who have been standing in military training for a long time.

It is recommended to buy elastic insoles with moderate height. We can use elastic insoles to control the center of gravity. When our heels are tired, we can focus on our toes, because they are less stressed. But after a long time, the insole on the toes is easy to wear, which is one of the reasons for replacing the insole. This kind of uneven extrusion of feet is easy to produce plantar warts, which is very abrasive (I am like this).

insole

(You can search your own plantar wart pictures, similar to corns)