I have been zapping over 12 years and through my work, I have talked with literally thousands of zapper users. A number of them do feel effects of die-off during the first week or two but rarely do any of them have problems after that. The ones who do, I find that they often do not use the zapper correctly or they do something that nullifies the effects.
>- have pain in the heart area after zapping.
This is very rare, but you may be looking at this in the wrong way. First, you may have some congenital defect that is causing you to feel this. You may be feeling a the results of an injured parasite
or a partially killed colony of microbes, or possibly some other defect in your heart.
What ever this is, you should get it checked out because ignoring it and blaming this issue on zapping is not going to make it better. Even if it only happens when you zap, it does not mean that the zapper itself is causing the pain. Again, this is a rare occurrence and it should be checked out.
About 6 years ago, I remember having a customer return a zapper because it made her heart race and made her anxious. A couple of months later, she bought another one and has been using it since.
>- Zappers are really experimental devices without clearly proven effects
Agreed, to an extent. There have been millions of these sold under various companies and brands and one thing is clear. There has not been any reported fatalities or serious injuries. There are many users who will flat out tell you that zappers have been a life saving device for them.
There are some claims about zapping that have been well established. If you feel the first symptoms of a cold or flu and properly use the zapper immediately
, the symptoms will go away and the flu or cold will not develope. This has been repeated time and again. To date, I have not heard from anyone who had tried this and failed. If you develope a full cold or obvious flu symptoms, then the zapper may have an effect of reducing the extent and/or duration, but it will not often make it disappear.
>- questionable side effects.
Again, the main side effects are typical die-off symptoms, just plain toxicity that is going to occur anytime that you kill microbes or other parasites
that may be living inside of your body.
>- no one understand how and why they work or don't work
They work because many lower organisms are sensitive to electrical pulses which cause their cellular structures to break apart. This is actually easy to demonstrate and there are a number of videos on the internet showing this. No trickery, all it takes is a zapper, a microscope, and a slide full of germs.
As to when they do not work, in some cases, a poorly made or defective zapper may be the problem, but in most cases, incorrect zapping technique is used.