These low-impact core & abs exercises greatly Strengthen the abs, core, back and stabilizer muscles. Stretches, strengthens and relaxes your body. Your core is always working – when you stand up, walk, lift an object, or even breathe. The strength of your core determines your ability to balance, stabilize, and control weight every time you exercise. Since incorrect posture leads to both tight and weak muscles, it’s important to implement a good stretch and mobility regime.