Is it normal for my neck/back?!

If it sit upright and "properly" instead of slouching and let my head hang forward, my upper back muscle feel like they are pulling, also if I gently roll my neck to either side my shoulders pull, and it's kinda painful, it also feels when I do this like my back is being pulled into line!.

Is this normal!? Or should I stop doing it!? I do it to try and relax my shoulders when I'm sat at a desk all day!

Thanks!
xxxWww@Answer-Health@Com

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