Your heart, brain, nerves, and muscles all run on electrical signals. Here is what actually helps, what hurts, and what is mostly marketing. Key Points The body’s systems rely on electrical signals, powered by electrolyte ions. PEMF devices have medical uses, but most “electrical health” products are oversold or lack evidence. Everyday habits—hydration, nutrition, sleep, movement—best support real bioelectric health. Tell someone their body is electric and it sounds like a crystal shop pitch.