Exercise two: Russian twist
This exercise works your obliques because of the twisting motion.
- Sit on your tailbone with your abs pulled towards your spine. Your torso should be scooped out to make the 'c' shape.
- If you can hold your legs bent at a 90 degree angle. But if your back hurts put your feet on the floor.
- Lock your fingers together, and then twist left and right, touching your hands to the ground on each side of your hips.
Do 20 to 30 repetitions.