A fluid, either gas or liquid.
lighting and the tesla coil flow in gass High voltage will flow thru anything, including air.
You probably die, after which you probably won't be doing anything.
Conductor
Viscosity is "resistance to flow". Anything that doesn't flow very easily has a higher viscosity level. Oil would be example.
The Mediterranean doesn't "empty" into anything. Rivers flow INTO the Mediterranean, not out of it. It is a SEA, primarily fed by the Atlantic Ocean.
Note that "electricity" doesn't flow, only current, which is one aspect of electricity, does. Current is the flow of electrons. Anything that doesn't allow current is an insulator
"Fluids" are substances whose particles are not rigidly attached to each other. Thus, they can flow.
Simply stated as "blood flow compromise", which is anything that may prevent proper blood flow such as a hemorrhage, plaque atherosclerosis, etc.
Anything that carries and/or can transport charge.
conductor
Steady flow: Water flowing through a pipe at a constant rate with uniform velocity is an example of steady flow. Non-steady flow: Waves in the ocean where the water motion is constantly changing in both intensity and direction represent non-steady flow.
full exhaust and anything else to help air flow