The Greek yogurt in the recipe provides a good amount of calcium and protein, both of which can aid in weight loss. The smoothie also contains several ingredients — like blueberries — that have been shown to help diminish belly fat. If that's not enough, you also get the sweetness of pineapple, which contains an enzyme that helps ease digestion and banish bloat. You won't be able to taste the kale, which is full of fiber to prevent constipation, and there's calorie-free water to help clean you out.

Flat-Belly Smoothie

Ingredients

3 ounces vanilla nonfat Greek yogurt
1 tablespoon almond butter
1/2 cup frozen blueberries
1/2 cup frozen pineapple
1 cup kale
3/4 cup water

Directions

1. Place all the ingredients in a blender, and mix until smooth.
2. Enjoy immediately.

Makes one serving.