I bought an acupressure mat (bed of “nails”) a couple of months ago to help with back pain, relaxation and hopefully to help give me a bit more energy.
I used it for half an hour or so a couple of times a week, while listening to music, and it helped with all of those things.
I hadn’t used it for a month, though, due to not feeling well with one thing and another.
Today I fell into a deep sleep after half an hour on it and had to crawl into bed for another ninety minutes. Still feeling groggy.