>>723093174
It changes as you, yourself, change.
I used to be nothing but a back-sleeper, then a face-sleeper, then back over to nothing but back, and am now rocking the side-sleep.
One was when growing up, one was when my new bed was uncomfy, then had a gf who I liked to occasionally intertwine legs with, then single and /fit/ so my favorite pillows don't feel the same.
I dunno when I'll be off this side-sleeping kick, but it will probably happen eventually.
>bideo james