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Heart operates in 1-2mhz range. Some zappers go that low so yeah not a good idea.
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This makes no sense. mhz means millihertz, so you're saying the heart "operates" in the range of 1 one-thousandth of a hertz to two thousandths of a hertz, 0.001 Hz to 0.002 Hz.
First, not, it doesn't.
Second, no zappers go that low.
If you meant something else and this was a typo, please repost. I am very interested in this topic.