1
Lie supine on a flat surface with your back flat, knees bent at 90 degrees, and feet flat on the floor approximately hip-width apart. Place hands behind your head with elbows out to the sides, or crossed over your chest.
2
Engage your core by drawing your navel toward your spine. Keep your neck neutral and avoid pulling on your head during the movement to prevent neck strain.
3
Slowly lower your torso back toward the starting position with controlled movement, allowing the abdominal muscles to lengthen as your shoulders approach the mat. Do not fully relax at the bottom position.
4
Drive through the abdominal muscles to lift your shoulders and upper back off the floor, curling your torso upward toward your thighs. Exhale as you perform this concentric phase. Return to the starting position with control to complete one repetition.