You dont' have to hold on. EMEM's are radiant machines, just sit in front of it.
I was told to start slow and build up my time, which I did. I did not herx much in the beginning. After a few treatments the herxing started, but it was delayed a day or two. Now I herx immediatly.
Is the light on in the tube when your machine is on?? With my machine I have to flip a switch on the box and also turn on the little blue box where you set the frequencies. The first time I forgot to turn on the frequency generator.
Also, your lyme may be in cyst form right now and the rife machines can't kill them in that form. Have you recently gone off abx? If so, then chances are, at least some of your germs are still in thier protective cyst form and it will take a while for them to go back to spirochette form where the rife can get them.
hope this helps.