It’s been speculated for years among some circles. That there are latent abilities, traits, and talents present in our DNA that for unknown reasons was shut off in the past. Jury is out on the who precisely. I’ve heard several different ideas. Ancient Humans, Aliens, and the almighty himself being the most prominent ideas.

And various people who for one reason or another have become famous for various things. Like Intelligence. Or Immense size/strength etc. Have had one or more of those latent traits switched back on.