Those of you looking for an indulgent immune-boosting drink will love this creamy yet fresh strawberry, kiwi, and mint smoothie. Apart from containing quite a few vitamins (namely, vitamin C, A, and B6) and minerals, such as zinc and folate, the Greek yogurt in this smoothie has a healthy dose of magnesium and probiotics. In addition to aiding digestion, the latter will boost your gut microbiome and make you more resilient to harmful microbes.