I’ve been doing the same three ab exercises for the last five years because you don’t need a lot to build a six-pack. Let me walk you through a proper ab workout. Starting off with a weighted crunch. When you do this, I want you to imagine that you are tucking your ribcage down as you round your spine to a full flexion. Make sure that your hips are locked in place and are not moving at all. Next stop, cable oblique twist. Here you want to keep your arms extended and elbows locked at all times and focus on rotating your torso. Finally, reverse crunch. Pull your body into the bench, lift your butt up and focus on rolling your pelvis towards the belly button until you feel a strong contraction in your lower abs.