크런치

A core-strengthening exercise targeting the abdominal muscles, performed with hands behind the head for added neck support.

Instructions:

• Lie on your back with knees bent and feet flat on the floor.

• Place your hands lightly behind your head, elbows pointing out.

• Engage your core and lift your shoulders off the ground, bringing your ribcage toward your pelvis.

• Lower back down slowly without letting your head drop.

Common mistakes:

• Pulling on the neck with your hands

• Using momentum instead of core engagement

• Letting elbows come forward instead of staying open

• Raising the entire back off the floor instead of just the shoulders