Specifically, I asked Which muscles do I use to stand, which was closed as not being about martial arts, even after I related it to the major internal arts which focus heavily (no pun intended) on subtle weight shifts, balance and relaxation.
I could ask "what's the best way to hold your hands up in a guard" and the answer would be, "you learn to relax into it", but it's a double-edged question, because as you hold your hands up, you will develop some upper-body muscles necessary and also learn to relax into it.
Now, I don't actually need ma.se.com to answer this question for me. I'll figure it out given a few years of training. But the fact that this question came right out of my needs for my training lead me to think that this question is not off-topic.
So, when does a question stop being about martial arts?