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?
Brazen fit 24 day ab challenge - the fact that you saw this means that you should do this! It's just 24 days! You have time to give the necessary minutes every day for this. Remember YOU ARE MEANT TO SEE THIS AND DO THIS!