How circuits work?
Electrons travel form positive to negative and their job is to produce light. There must be a complete circuit so they can flow through the light bulb and then back out.
They sit inside the wire waiting and when the switch is flipped the electrons move through the wire, when the electrons reach the lightbulb the wire thins out and is forced to flow through in which produces heat and light. If there is to much voltage the light bulb will short circuit
Ohm Laws of Electricity
The electricity will flow through your body to complete the circuit. The human body is a good conductor and electricity will pass through all humans although our body has a lot if resistance.The electricity will travel from a positive to negative, which will pass through your whole body if it has to. When you do get shocked by electricity you may feel heat. When the electricity flow through it gets more charge from your body and greats a higher voltage that may lead to the wires short circuit.