The Rock-Solid-Abs Workout - Abs Workout,The plank is one of the best exercises for a flat, toned stomach because it works all the muscles in your core, including the rectus abdominus. - Abs and cardio at the same time?
Want to get a Tinseltown tummy at home? All you need are hand weights and a stability ball. For blockbuster results, do this workout three times a week for a month. Coming soon: your own close-up-worthy abs.