1. Peel the banana.
2. Wash the spinach leaves thoroughly and allow them to drain in the colander. Chop their stalks off.
3. Wash the mint leaves thoroughly.
4. Wash the kale leaves thoroughly.
5. Using a food processor, blend all the ingredients together to make a smooth concoction.
6. Best served chilled, garnished with a sprig of mint and had right after a workout.