The problem with many green smoothies is they can feel a bit lacking. With the best of intentions, you aim to sip smarter but end up feeling starved not long after. The problem? Your drink isn’t packed with a filling punch—because spinach, ice, and frozen fruit won’t make you full. On the other hand, with the right ingredients, a green smoothie can be as filling as a much higher-calorie meal, leaving you satisfied and energized for hours and lighter for the win.