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How to get a blue belt in gkr karate
Be sure that you have attained your green belt.
When you start gkr you will be a white belt, from there you grade to yellow, then orange, them green and then blue belt. So first you need to reach green belt in gkr.
Blue belt is called 5th kyu, this means you are a students who is 5 grades away from black belt. This is the halfway point between white belt and black belt.