This Tropical Chia Seed Smoothie recipe is just 338 calories and has 10.4g of protein!We soak the chia seeds overnight so that they expand. This will give you a super thick shake like smoothie. Though you could add everything in the blender and skip the marinating if that's not important to you. Special Tip: Don't get the coconut milk in the can, you want the unsweetened coconut milk in the milk section. It's lower in calories and fat!