Cracking your fingers continually may cause Repetitive stress injuries (RSIs) in your fingers joints. These types of innjuries happen when too much stress is placed on a part of the body, resulting in inflammation (pain and swelling), muscle strain, or tissue damage. This stress generally occurs from repeating the same movements over and over again. It is not recommended to be putting over stress in any joint, meaning “cracking your knuckles” or “popping your fingers”, because in the long run the ligaments and all the other elements that constitute the finger joints get affected and you may start to have several problems as: pain, limitation, and possibly swelling.
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