Bab 117: Shortcut.

Their days continued like so, from one exercise to another, from morning to night. Physical training drains them of their vitality and some mental energy, while Spiritual training drains them of their mental energy and some vitality. When done one after the other, it leaves the body lacking and at its limits. This will encourage it to find a more efficient means of metabolism that can cater to its needs. Something like mana for example. In more ways than one, the exercise regimens push the cells to adapt to mana so that trainees without a bloodline to help them will be able to break through to become mana entities on their own.