The human body is just a bunch of humble biological compounds, strung together to form cells and, ultimately, you. So how exactly does it create electricity? Good question!
Thing is, while it's easy to think of electricity as batteries and power outlets, on the small scale the only thing you need to create electricity is electrons—which are found in every single atom that surrounds us. This video explains how the body harnesses them, to take care of some very important physiological functions. [The Medicine Journal]