I just started experimenting with my MI yesterday - so, keep that in mind as you read.
I used the Omni 8 protocol twice on the Lower right side of my neck for a tight muscle. The first time the 2 coils were side by side horizontally at power level 8, and I laid down with them in place to take a nap. Could not get to sleep as I usually can. The second trial was at the same location but the side by side coils were verticle, and I reduced the power to 6. I did this 2 hrs and 19 min. before going to bed, when I took off the coils. This time I had unusual difficulty falling asleep and my sleep was very restless.
LESSON LEARNED: Don’t use Omni 8 on the neck (or head area) close to bed time, or in bed, as it will keep me from falling asleep. As a side note, both tests did relax my tight neck muscle.