Attached a light resistance circle tube several feet off the ground. Lie on your back with your head below the anchored circle band – arms extended by the sides of the upper torso with palms facing down to support the lumbar spine. Bend the legs to 90-degrees and rotate back to 90-degrees at the hips. With the band around both feet at the mid-point, contract the abdominals, push the low back toward the ground, while extending both legs out against the resistance of the band. Adjust the distance from the anchor to increase or decrease the resistance accordingly. Exhale when you extend the legs out. Try 10 reps.