Tarrycat
Green Belt
To your last comment - I'm not sure if that was a response to something in particular. I often mention the art I teach/train in, because it provides context to folks who are familiar with the type of art.
Another thought - boxing benefits from relaxation, too. Someone too tense (or, perhaps more accurately, incorrectly tense) in boxing will feel the punches more, deliver less power, and move more slowly. Learning to use relaxation and tension properly is a common theme across martial arts. Most people have some "natural" incorrect tension - we unlearn it (it's actually a learned tension) over time.
I think ALL of my tension is incorrect, hence it stems from stress & anxiety, which I mentioned in my other response to someone else. It's something I'm working on...slowly...
You mentioned in one of your replies, some Judo & Aikido techniques. Is that what you do? If you did comment about your art, I must have missed it somehow.
Trying to keep up with all of the comments here via mobile is a difficult job!