Flat and defined abs. Almost everyone wants them. Few have them. And for every good ab workout there are a zillion bad ones. Start hitting the right muscles, in the right ways, the right number of times with the standing side crunch with high kick

Standing-side-crunch-with-high-kick1

Step one

The standing side crunch with a high kick engages the entire ab wall. It is also challenging to your balance and stability. Bring the right knee towards the right elbow, keep the chest open rather than rounding forward – imagine that your back is against a wall and you're sliding along the wall as you do this exercise.