Protons cannot move freely between charged bodies like electrons can, as they are tightly bound within atomic nuclei and do not "float" in solid materials. When two charged bodies come into contact, electrons transfer to balance charge differences, while protons remain fixed in place. The discussion highlights that protons can only be lost through high-energy nuclear reactions or radioactive decay, not through direct transfer between bodies. Some confusion arises from the behavior of protons in different states, such as in water, where they can conduct electricity, but this is not applicable to solid materials. Ultimately, the movement of positive charge in solids is primarily due to the repulsion of electrons rather than the movement of protons.