"Studies are few but a
small one featuring healthy people suggested these mats may be able to reduce heart rates during sleep (high in ME/CFS/FM)"
That does somewhat resemble a recent experience of mine:
The last few years I had more and more very vivid dreams and fast paced high action cinematic 3D nightmares waking me up out of sleep several to many times a night. Sometimes I had tens of consecutive nightmares, each time stronger. Oddly enough I did not feel mentally afraid or anxious.
Often it went hand in hand with shaking, visual disturbances (fast flashing visual sensations) and some odd form of trembling as if my whole body went in some sort of resonance at about twice the beating rate of my hart. More then once, it felt as if I had a continuous "brain wave". It was quite unpleasant.
I noticed that I could shortly interrupt it by standing up and going to the bathroom or by deeply breading in and out a dozen times. As the time passed I could increase my control over it, but still for short durations. I focused on the visuals and tried to do things to moderate the disturbances. It worked within a minute but the side-effect was quite stunning: my hart rate reliable dropped from 60 to 65 beats a minute to 45 to 50 nearly each time, within a single minute!
I could manage to improve the technique and it seems that it puts pressure on the hart. But that wasn't ideal as my hart started to hurt. I consider that a no go. Yet, I further worked on the idea of someone on this forum that the high hart rate we have (mine used to be always 90 to 95 wathever I did nearly two years ago) is because the first chamber of the hart can't relax. As an engineer I know that making underpressure in a pump is a lot harder than overpressure as the fluid has to flow from itself in a cavity. So maybe this would combine with my idea of very much worsened blood flow in the hair vessels and lots of standing still (still as in not moving; translation?) blood leading to a sepsis like state (see forum on
http://www.healthrising.org/forums/...atigue-syndrome-me-cfs-and-fibromyalgia.5174/) so I thought it might be blood standing to long still and both the waking up and breathing technique created pressure and underpressure to remove standing still stale blood from the legs.
I believed that could be done better. So now I do every time I wake up some few gentle movements of my leg muscles (move feet too) to compress and expand them and it works quite well. Maybe we are restless in order to move in bed and to prevent the blood from standing to long still? The accupressure mats could do the same: squeeze stale blood out of the muscle cells? If that would be it, my litlle experience could be more gentle (just moving, no "nails") and more effective (every hour, not just once).
Anyone wanting to try and observe? It's quite harmless and could help some of us further if it would work. I guess it would be better fitted for someone with some form of orthostatic intollerance.