I'm 13, 137-140 lbs., and my plan is to get abs, but I feel like you need to get really skinny first. Anyway, here's what I eat: School days:

Breakfast: Unsweetened almond milk (no sugar and 30 calories) may add banana slices.

Lunch: Natural peanut butter sandwich (on sprouted grain bread) with a side of baby carrots.

Snack: 100 cals. of pistachios

Dinner: Fruit salad (apple and banana slices)

Non-school days:

Breakfast: weight watcher's steel cut oat, cinnamon, and apple slices with Unsweetened almond milk.

Lunch: fruit salad

Snack: Pistachios

Dinner: Skinless, boneless chicken breast.

P.S. I do excercise. I go to the Y at least 4-6 times a week where I burn 1000-1200 calories.