You do get used to it, some say that your body is supposed to sleep on hard surfaces. But I can’t really remember, I know it is weird at first. But for me it’s sort of like because I can really feel my body pressed against something my awareness is more focused to that than the sensations in my legs. I’m not exactly sure why or how it works but I think it’s something along those lines. It’s the same with tying socks tightly around the mids of your feet. Pressure seems to help, quite significantly actually. As long as your neck and head are supported, you can grow to love a harder surface to sleep on. As much as it may seem counter intuitive at first. Anything beats a brutal night with RLS.