Lie down on your back. Plant your feet on the floor, hip-width apart. Bend your knees and place your arms behind your head. Contract your abs and inhale.
Exhale as your lift your upper body up off the ground, keeping your head and neck relaxed. At the same time lift one of your legs up until one of your elbows and knees are touching.
Inhale and return to the starting position. Repeat for the required amount of repetitions.
Progressions And Regressions