Just for fun, try a cheapo XL yoga mat. I find that the stiff-ish surface helps me sleep better and I wake up with less back and shoulder pain. Could just be me

Just for fun, try a cheapo XL yoga mat. I find that the stiff-ish surface helps me sleep better and I wake up with less back and shoulder pain. Could just be me, and I still sometimes prefer the bed, but it's a cheap experiment and way better than an air mattress.