I was watching a video about physics that said people who want to study theoretical physics but do not want to study things like electromagnetism, thermodynamics, experimental physics, etc, should study math, then take some classes in theoretical physics. This way, you could study your favorite parts of physics (and really understand the math behind it) while simultaneously being able to skip over the parts of physics that you do not like. As someone who fits this profile perfectly, and who loves math, this sounds appealing. But as someone who has never studied higher level physics or math, I am not sure if or how this would work. Will this work as well as it sounds if at all, and why?