Technically if magic were real, then the rules of magic would be the rules of physics. Plus any rules of nonmagical physics.
This is invoked hilariously in Harry Potter and the Natural 20, which involves a D&D 3.5e character being portalled to Magical England. His name is Milo, and he works a little differently than the people native to this universe. For example, he takes actions over the course of exact 6 second increments. And he can heal almost any wound with 8 hours of sleep, with his body magically knitting itself back to full health at the moment 8 hours have passed. He’s not capable of learning new skills over time, his level of proficiency stays exactly the same in all tasks into he levels up, at which point improving his abilities requires investing skill points. He finds the idea of learning and healing gradually to be ridiculous and silly. Also, he can move faster going at a diagonal than a cardinal.