No: Your knuckles are simply joints in your fingers. So how does inflicting damage on hard bone make it stronger? You can actually fracture them. One type of finger fracture is even called a Boxer's fracture. You will develop calluses though which is what is perceived as "stronger".
Answered 6/22/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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