ParaZapper, what frequency is the best you heard for fighting the flu or cold? I have a RSG-4 and it seems to me that the 30kHz is the only one that helps me fight off the flu or cold. The other frequencies it comes with are .7kHz and 2kHz. It seems strange because the 30kHz is the frequency I don't feel anything happening. The lower frequencies I can feel it going into my hands.
Maybe it is just my body makeup?