It was something Veer had come up with while practicing the Primordial Arcane Forge. The Mana Circulation Technique gave him benefits because his body endured torture.
So, what if one of the major aspects of advancing in the Warrior path was to push the physical body past its limits again and again?
It was common knowledge, actually, but he understood it better after experiencing it.
Because of this realization, he came up with a method that would help his subordinates rapidly, but they would have to endure torture.
But the gains would be worth it!
As someone who practiced the Primordial Arcane Forge, there was no way he could demonstrate the method he had thought of. He might as well directly commit suicide.
So, he asked the most talented person he knew in the Warrior path: Elara. She was a monster from birth and was behind others for one simple reason—she had wasted too much time with Veer.