My husband loves smoothies; in fact, sometimes he makes multiple smoothies at the beginning of the week so he won't have to make the big smoothie mess every day. On occasion, I will look down at my phone while working and see a, "What do I put in the banana smoothie?" text. The thing about smoothies that makes them so unique is finding the correct proportions. When making this recipe below, stick to the given measurements unless you are intentionally trying to make the smoothie thicker or more watery.