Not very often but more so when I'm anxious when I'm trying to relax and go to sleep on a night I get weird sensations.
Last night for instance I kept getting brain zaps, I could feel my pulse all over my body, I kept hearing weird noises and I could feel the adrenaline going around my body. Coupled with heartburn that would not shift it took me ages to drop off.
Im just getting over a particularly stressful time that has triggered my anxiety but last night I didn't feel anxious it was so strange.