250 calorie day:

A piece of frozen fish in my fridge is 157 calories, so on the really restricted days of only 250 calories I could have an egg for breakfast (50 calories), a laughing cow cheese wedge for lunch (35 calories) with black coffee. 

OR

1/2 hr run (-250 calories)

So I can eat 500 calories worth of food.

So, two piece of vegemite on toast for breakfast (250 calories)

Starting at 0 calories 100 grams of chicken for lunch (100 calories),

piece of fish for dinner (150 calories).

OR

1/2 hr run (-250)

Two piece of toast with vegemite ( +250)

Starting at 0 can then have two eggs ( +100)

Chicken and vegetables for dinner (+ 120)

1 laughing cow cheese wedge for lunch (+ 35)

Tiny butt.

Skinny legs.