Deep Down Ab Move For The Core

Here is an extremely difficult ab move that gets down deep in your core.

Using a balance ball, get in plank position with feet balancing on the ball. Try to get a ball the appropriate height so that your body is parallel to the floor.

Hold here, shoulders over wrists, abs sucked in tight and making sure not to sag your belly towards the floor. If this is easy (in that your whole body doesn't shake while holding this pose) draw right knee in to chest and hold. Replace foot and repeat with left knee.

It's hard, but stick to it and your abs will flatten faster than a hair straightener smoothes out curls.