Losing weight can be easy and fun when following the Green Smoothie Diet, says the Green Smoothie Diet's official website. And after all, why shouldn't it be since people who have a green smoothie every morning can start their day energized and deliciously? Green smoothies successfully replace breakfast because they contain vitamins and the nutrients the body needs to remain healthy. Besides, they're low in calories and, depending on their ingredients, can speed up the metabolism, reduce appetite, and increase satiety. In other words, the Green Smoothie Diet is a weight loss product that offers a healthy approach to having a slimmer body.