There is a path, from the ground, up your leg, across your torso (including your heart) and down your other leg.
This is the reason that downed high voltage power lines are so dangerous. Walking with a long stride can create enough of a differential to fibrillate your heart.















Wars have a weird amount of holding back. Going after civilian infrastructure is often seen as “ungentlemanly”, basically bad PR. Most Ukraine attacks like this seem to be to prove they can, not to cause significant civilian damage.
Basically, Russia has a number of nasty options, currently unused. Ukraine is also unusually dependent of foreign help, and so it is vulnerable to the world opinion changing. Ukraine is mostly proving its threats are viable.