How can i get flat abs/exercise/food?

Combo of things.: A combination of things will help you get flat abs. First, if you have an excessive amount of body fat, it may be covering your abs. So, a good diet, combined with fat burning activities, such as walking, running and biking will burn fat. Then strengthening and toning exercises for your abs, such as sit-ups and variations of them, will build the tone in the abs.

Flat abs: For flatter abdomen eat healthy & get physically active. Calories burned > calories consumed. To tighten ab's: crunches, reverse crunches, exercise ball crunches, pelvic thrusts, lying leg raises, side bridge & “bicycling” exercise on back. Engage in regular aerobic exercise (i.e. running, swimming, Nordic track, bicycling, kickboxing, walking, cross country skiing, hiking, etc.)