Having a hunched posture (left) or an unnaturally arched back (right) are both signs of a weak core. With a strong core, posture will appear much like the center photo, with shoulders back and no stressful bends in the spine.

PHotos by Allison hamilos—The Tech PHOTOILLUSTRATION BY JESSICA L. WASS­—THE TECH

Having a hunched posture (left) or an unnaturally arched back (right) are both signs of a weak core. With a strong core, posture will appear much like the center photo, with shoulders back and no stressful bends in the spine. PHotos by Allison hamilos—The Tech PHOTOILLUSTRATION BY JESSICA L. WASS­—THE TECH