Most of the best exercises for strengthening the ab muscles are crunches. Crunches are exercises where you bring your body right forward, curling upwards to bend yourself into a tight ‘V’ shape. There are very many variations on crunches.
One of the most popular is the exercise ball crunch, which is where you lie back onto an exercise ball, and then do a crunch slowly, without the ball moving. This allows you to keep a good crunch speed, as well as supporting your back while you crunch.
