Full Stomach Sitting Can You Get A Washboard, Six-pack Stomach With Sit-ups (and Healthy Eating Habits) Alone?

Can you get a washboard, six-pack stomach with sit-ups (and healthy eating habits) alone? - full stomach sitting

If not, what are good exercises to add to add the mixture? When you say that the cracks this thing? (I am inclined to, places in the apparently less severe crisis rather ... until I exhausted from steam with belly).