At the core of the series of training plans that Giles had come up with, the most important thing was to use these training sessions to help the Metal-feathered Eagle overcome the problems it faced due to its incomplete evolution.
For example, having the Metal-feathered Eagle fly around Starlux Gym ten times a day was to train its balance and endurance.
He had taught it flying skills to train its reaction speed and control.
As for Giles, he was running with the Metal-feathered Eagle now because he realized that after the Metal-feathered Eagle grew its two arms, its body shape had already met the requirements of a "human-shaped spirit beast".
"Human-shaped spirit beasts" were as their name suggested, no matter how large they were, their bodies were similar to that of humans.