When I smell the taste of some exotic fruits as papaya, acerola and pineapple I do remember about my childhood: my lovely mum used to prepare smoothies very early in the morning for my day in a metropolis far away from home… At that time they were not called smoothies. For me they will be always "sucos" as we say in Portuguese for juices.
Nevertheless I bought a book with some ideas to fortify the immune system and I loved the ideas of using superfood in smoothies.
Nowadays you mix salads, vegetables and herbs that I don't think my mum would ever dare to put in the juices. I will try them with the kids and see how it works.