Questions

"Extreme saturation of foreign energy called mana found in the host's body. Using the unneeded energy to upgrade software. "Lang's monotone voice resonated inside Dan's head.

Mana was an energy that increased a person's physical and mental attributes. But that would happen only when the person was a metahuman.

While a normal person would get the benefits of mana when ingested which can increase their physical and mental attributes but mana, even in a slightly higher amount than what the body already contains, can be harmful when ingested at once for a normal person. It was also the reason why using mana core to awaken was such a fatal thing to do.