Blast the blues away by mixing up a Creamy Winter Citrus Smoothie! Whey protein powder serves as the base of this smoothie, and blended with freshly squeezed pink grapefruit juice, orange juice and lime juice, it creates a deliciously fruity drink that works well in the mornings or afternoons. Not only it is tasty, but this smoothie recipe boasts a ton of protein to fuel your body throughout the day.