>- can u zapp in your sleep like for 8 hours or so
Some users with HIV, HEP-C, etc will zap 24 hours continuously. While I have not heard of any extensive negative effects, this does not mean that there are not any. One consideration is the recovery of normal intestinal flora will be impeded by such extensive zapping.
We actually produced one zapper (ParaZapper AV) that created quite a stir and this may partially be why the FDA came in and shut us down. The AV was a Rife-Clark zapper designed to be used around the clock.