Roll Outs
A tough exercise for your anterior core muscles. Setup in a plank position with your forearms placed on top of a swiss ball and wide stance with your feet for balance. Squeeze your glutes tight and brace your core. Now very slowly and smoothly roll your forearms forwards a few inches. You should feel your abs fire up. Briefly pause then smoothly pull your forearms back to the start position and repeat. You don't need to roll the ball very far and you shouldn't feel any strain in your lower back - keep squeezing your glutes!