Sit on a mat or carpeted floor. Loop one handle of the resistance band on either foot. Hold onto the middle of the tube with both hands, and lie on your back.
Draw your navel toward your spine, and press your low spine into the floor to protect your lower back, then lift both legs up so they are almost pointing straight up toward the ceiling.
Holding the band securely, scissor your legs up and down one at a time, starting with the left leg. Move slowly, and point your toes.
To make this move more difficult, lower your legs so they are about six to 10 inches above the floor — illustrated in the lower image. Make sure to keep your abs scooped when you work with your legs close to the ground.