Yes, that's right. I was referring to the Western "Yoga" which is just stretches and breathing exercises.
Actual Yoga had several "limbs" or modalities you can follow and involve immersion. Your life becomes it. It's not like the gym where you forget about it between sessions but rather you aim to change (develop) your being.
I've always found it interesting how most past societies offered established ways to retreat from society. Our current society seems to be the first in which such a thing is barely possible in an "honorable" way: most possibilities are looked down upon, or illegal, or/and greatly increase your chances of a premature death. Yes, some still have done it, but it's no longer a "supported feature" of society, so to speak.