I vaguely remember reading that not all slouching is equal and that some forms of slouching are actually better for you (I googled but cannot find the original

I vaguely remember reading that not all slouching is equal and that some forms of slouching are actually better for you (I googled but cannot find the original article but it appears there are various similar articles). For example the leaning backwards slouch is supposedly better for your back than just sitting completely erect.