Martial art means that you never stop learning
When you start training Martial Art , then you start with something that’s never ends. You can always be better either in your mind or body. Many train one style all life, but more and more start with several arts. If you have one black belt, and then you are at starting with a new art. It’s really heavy because you often use what you have learned before. But after a while you will be able to split them. Then when you have trained the new art for a while you will joine them again with out knowing it.