Lie flat on your back with your legs extended and a resistance band looped around your ankles. Place your arms by your sides with your palms facing down to help stabilize your body. Engage your core and keep your lower back pressed into the floor.

Keeping your feet together and the band taut, slowly tuck your knees toward your chest. Focus on engaging your lower abs as you lift your hips slightly off the ground. Keep the movement controlled, ensuring that your lower back stays in contact with the floor.

Extend your legs back to the starting position, keeping the band under tension. Avoid letting your lower back arch off the floor as you extend. Repeat for the desired number of reps, maintaining tension in the band throughout the movement.