Ab Activation During a Crunch Performing a crunch on an exercise ball is a great way to engage your core muscles. By applying the mind-muscle connection, you can enhance the effectiveness of your exercise routine. Here's a step-by-step guide to help you. * Setup: Start by sitting on the exercise ball. Walk your feet forward, letting the ball roll beneath you until it's positioned in the small of your back. You should be in a bridge position, where your knees are bent at a 90-degree angle and you

How to Do Abdominal Crunches Using a Balance Ball