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When we pinch our finger we hear a sound.Do you know why this sound appear? Ok I will explain it.
Usually we know that when we pinch our finger there is a friction between two bones.That's why we hear a sound.But it's totally wrong.
There is a fluid in surrounding of our bones.It's called synovial fluid.When we pinch our finger there formed one type of vacuum in the synovial fluid and also a bubble is formed.This bubble is broken immediately. We actually hear the sound of broken bubble. Bubble gas takes 20 minutes to mix with fluid.That's why after pinching your finger you can not repeat it in 20 minutes.
Pinching finger is good or bad?
We got temporary relief when we pinch fingers.For that reason it's good.But you have to make sure that don't take it as habit.Because too many pinching fingers can loose your joints. You will be glad to know that there is no relationship between arthritis and finger pinching.