When you get a callus, if you shave it off it grows back to the same thickness. How does the skin know that in the area its job is to be thick and rough now? How does it know how much you shaved off and to grow back that much?
In: 8
It grows enough to protect the area from repeated injury. If you are growing a callus you are repeatedly injuring that spot. Getting rid of the callus gets rid of the protection but not the cause. If you keep doing the same activity you will continue to cause the same injury and the body will continue to protect itself in the same way. If you stop the activity the callus will eventually go away on its own as the body won’t need it anymore.
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