Ditch the mat and try standing crunches for a stronger, more balanced core
In reality, standing crunches offer a dynamic, functional, and spine-friendly way to strengthen your core while improving ...
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18 ab exercises that won't hurt your neck or back
tighten your upper abs and curl your head, neck and chest off the ground as you reach your arms toward your toes. Repeat 20 times. Seated on a mat, engage your core muscles and gently lean back a ...