Another way to do this is 600 total for breakfast+lunch, snack on zero-calorie, walk 2 miles, and save your calories for a nice big dinner. You wind up with 12-

Another way to do this is 600 total for breakfast+lunch, snack on zero-calorie, walk 2 miles, and save your calories for a nice big dinner. You wind up with 12-1500 calories to play with at night when willpower is lower and snacks are handier.