There's lots of ways to be fit, I just think OP is trying to say you can't put all your eggs in one bucket and expect all the benefits to come to you.
I even said stretching, manipulations, and massage have their own merits.
These are all used to change the body, but strengthening is the long term change.
Best practice is to do stretching, manipulations, massage before the strengthening.
But these are my Engineering summary, you can get treatment from a doctor of Physical Therapy that does this as a job.
If your instructor is having you do low rep, weighted exercises, it does hypertrophy and would improve that muscle.
Yoga is a generic term.
Then you should have just said "stretching".
Yoga is a generic term.
So is "strength training", but it's not so generic that I get to just make shit up.
You are more like doing endurance training which make cells for ADP/ATP.
And you likely aren't doing it like a perscription where they target the weaknesses. Rather general.
In the context of the original post, it is clear why I mentioned yoga in that list.
Read the context