Everything Under the Moon

So if you soak some metals in vinegar or mild acids they charge thus shocking you. Do you think they could be used I. Therapeutic rituals?

Jar batteries go back to before ancient Egypt. It's possible mild shock was used then, as now, therapeutically to end comatose states & seizures. It isn't something to play around with as electricity governs both the brain & heart's ability to function. In ritual a dash of icy cold water would have the same wake-up effect.