OBLIQUE CURL – Lie on your back with your knees bent and feet flat on the floor. Place your finger tips at your temples keeping your elbows wide. Engage your abdominals and slowly lift your head and shoulders off the mat, rotating your torso as you move your right shoulder across towards your left knee. Ensure that your lower back remains in contact with the mat throughout. Slowly lower and repeat on the other side.
Bicycle version: Lie on your back with your feet off the floor. Your knees should be directly above your hips and bent to 90 degrees. Lift as above but as you twist towards your left knee, extend the right leg in front of you until it is straight and your foot is approximately 10 cm from the floor. Return to starting position and repeat on opposite side.