Protein is essential in any diet because it helps build muscle, promote healthy hair and nails, and keep you feeling full. Adding protein to your smoothie will help you feel fuller for longer, so you’ll need less time to eat at your next meal. It also balances out the sugar in fruit-based smoothies.
Vegetables are another important component of the smoothie diet because they provide fiber and antioxidants that many people don’t get enough of in their daily diets.