Melons & Dairy
Just like kiwi is often a popular choice for yogurt mix-ins and smoothies, so are all kinds of melons. However, melons should actually not be combined with any other foods. Dairy is by far the worst. The level of acidity in melons is much higher than other fruits, and thus when combined with dairy products, it will cause the milk to curdle in your stomach and form a hard-to-digest mass. Stick to berries in your dairy products!