For those who play the guitar, having sore fingers is part of life. For piano players, the soreness can extend to between the shoulder blades. For saxophone players, the tongue and cheeks. There is always a complaint behind every single playing instrument. For those who go through guitar learning scales, the soreness can last for a long time. The fear of a beginner player is that they think that if they don't practice long enough they won't make good players. However, that is simply not the case. If there is a soreness, the only way to get over it is not to traumatize it some more. The only answer is to rest the fingers. If it has to rest for a week, the do so. The ability to play won't disappear with the resting; it will simply come back when the guitar is at hand once again.
The belief of not resting probably comes from an old saying that if 'there is no gain if there is no pain.' Well, this has long been proven very false. If there is soreness, then there is an inflammation, and the only way to improve it is to make that area immobile for a while until it recovers.
There are stretching techniques of the fingers that are used by guitar players, piano player, even harp players. The fingers go through a series of stretching and bending that will improve its flexibility and strength. With these the fingers can prevent itself from overexertion.
It should never be forgotten that the fingers are made up of several joint, and if the cushions between these joints get over traumatized, then they could tear causing a lot of pain and misery on the guitar player. There are some cases where the tendons could tear and this could call for more drastic medical interventions.
If you are a professional guitar player, you should know these things. For those who are beginners, you should also know these things. With the flexibility of the finger joints compromised, the ability of playing the guitar fluidly could be lost, no matter how much trouble one goes through to develop a technique to improve the playing.
So if it hurts, give it a rest. This should not stop anyone from playing the air guitar which is also a good practice for the brain and the eye coordination to transmit their signals to the fingers which can play without the presence of a physical guitar.
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