Officially, a tight or “stuck” upper body means you lack thoracic mobility. On the contrary, having solid thoracic mobility means you can stand up straight (and maintain that tall posture), as well as ...

Back extensions are an exercise that helps strengthen your back and core. Here are several versions and tips for effectively performing them. Share on Pinterest A strong core isn’t just about the abs.

Your back will thank you after taking on this routine – especially if you spend most of your time at a desk ...