A smoothie can also be called. a meal in a glass, because it is not only delicious but by virtue of the fruits and vegetables used, it also provides ample nutrition. This energy boosting apple and spinach smoothie is rich in vitamins! This smoothie is great for hair-fall control too. While the spinach and apple make you energetic, the taste makes your taste-buds tingle! This smoothie is a very delicious sugar free recipe.