Your brain contains cells that are called neurons. These neurons can create electrical impulses that travel through your body. The amount of electricity is very little, but is strong enough to make your muscles flex. These impulses can also be sent to your brain from nerves that sense things like hunger and pain. Sodium and potassium are combined by your cells to create these brief electrical impulses. That's why being tazered renders your muscles useless for a brief amount of time. There is so much electricity in your system that your organs and muscles can't determine which electrical impulses are coming from the tazer, and which electrical impulses are coming from your brain.
