Shock Therapy Questions from a beginner

I never thought I'd order this, but curiousity has killed the cat.

My questions:
I have several piercings. Is it okay to leave them in during use as long as I don't put the pads on the metal?

I've read some things that say that you shouldn't do them on your nipples. I don't know a lot about electricity, but I'm wondering if it's safe to use it on one nipple at a time and if the warnings come when you are just using one on each nipple, or is hte chest area not safe at all?

Any advice, or fun things I should try (hot spots, etc.) would be appreciated!

I never thought I'd order this, but curiousity has killed the cat.

My questions:
I have several piercings. Is it okay to leave them in during use as long as I don't put the pads on the metal?

I've read some things that say that you shouldn't do them on your nipples. I don't know a lot about electricity, but I'm wondering if it's safe to use it on one nipple at a time and if the warnings come when you are just using one on each nipple, or is hte chest area not safe at all?

Any advice, or fun things I should try (hot spots, etc.) would be appreciated!