Depends on your perspective I guess. My mother was French so I grew up speaking it. It came natural.
I have a 2nd degree black belt in mixed martial arts and its the hardest thing I've ever done. Learning a new language at this point would be hard but not as hard as some people think. As for martial arts, its not a hobby. You have to live it. It takes a great deal of dedication. That's why so few people are trained in it. But many people learn another language.
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