@admitsWrongIfProven @freemo

If you fix the current applied, any additional series resistance (e.g. resistance of skin, which depends on which part of the body it is and whether you have a cut there) doesn't change the current that passes through the heart. What does change it is any additional parallel resistance, which is barely affected by things outside of skin (potentially modulo the case of the person being dripping wet with saltwater or similar, which _reduces_ the current that goes through heart compared to a dry person).