Is magnetism caused by spinning protons or spinning electrons or both?

Question

I have watched a lot of science shows on YouTube. Some say magnetism is from spinning electrons, but a tutorial on NMR spectrospocy says that magnetic flux aligns spinning protons. So, I get confused. Hope anyone could clarify me on this.

Answer 1

Any moving electric charge produces a magnetic field, so both moving protons and moving electrons produce magnetic fields. This includes rotational motion.