From Texas Standard:
Five seconds and 50,000 volts – that's enough of a jolt to hijack your nervous system and contract every muscle in your body. Applying electricity in this way has become the tool of choice for police officers across the country. We're talking about conducted electrical weapons, better-known as tasers. They've rapidly moved from an obscure police technology, into the public consciousness. They've been hailed by law enforcement as a life-saving tool. But some critics say that's far from the case.