30 Day Plank Challenge - Benefits of Plank Exercise: *It strengthens your lower back. *It develops your core muscles – which include the abs, back, hips and the butt. *Helps you to avoid injuries and encourage good posture.
The best ab exercises for toning your midsection and sculpting the abdominal wall! Ready to really sculpt your abs? To get that flat, tight tummy you've been dreaming about you need to train both the superficial muscles of the abdominal wall and also the