Performing the: A Step-by-Step Tutorial Crunch - Back
Place your hands lightly behind your head, keeping your elbows wide open to avoid pulling on your neck.
Engage your abs, then lift your head, shoulders, and upper back off the ground in a curling motion, making sure to keep your lower back pressed into the floor.
Hold this position for a moment, feeling the contraction in your abdominal muscles.
Slowly lower yourself back down to the starting position, ensuring you maintain control throughout the movement rather than dropping back down quickly.