Full Capacity

After a bit of that, she clicked her pen and swiveled her chair to face Inko. "He doesn't seem to be in any additional pain, and his lungs are fully functional, so no worries there. However, he seems to have developed some sort of endurance for holding his breath, perhaps from this traumatic experience. Has he always been able to hold his breath for a long time?"
"No, not that I know of."
"Right, well it appears that overall, his lungs are stronger than the average patient. Has a doctor brought this up before?"
"No."
--
Aka Izuku has a quirk and things change.