[JauntyHatAngle]

I've always been a side sleeper. (6"2, 175 pound, early 30s male).

Due to a random medical issue (which has since become much more manageable), I got bad chest pain from sleeping on my side.

Despite this, I absolutely couldn't get a good nights sleep on my back, despite months of having to to. I end up being awake until I fall asleep from exhaustion and then waking up again after a few hours. It caused a lot of other problems as I was only getting between 3-6 hours sleep for weeks.

Months later when my condition improved, I went back to side sleeping, and even when it was still causing me pain, I slept much, much better.

Just an anecdote and I'm sure people are unique for things like sleep, but my own personal experience is that it isn't easy to switch.

That said, I actually like a hard mattress despite being a side sleeper.