Hurts like hell --> No Pain No Gain Fat Burning Ab Exercises. Burn fat and slim down while toning up your abs and strengthening your core. Repeat the circuit once or twice more. Click the image to see the moves in GIF form.
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?