"Eat food"
Nope, sorry. Put it back.
I know, this one sounds obvious, but given that most of the packaged foods on the grocery store shelves aren't "food", it's not as easy as you think. Edible things found in packages that can sit on store shelves for months (even years) without spoiling isn't normal! These items are designed by food scientists and many contain ingredients that are made from genetically modified corn and soy, and chemical additives. It sounds more like a science experiment than food. Products that advertise "low fat", "sugar free", and "light" are not real food, either. Just because they have found a way to lower the calorie content doesn't mean they're healthy. Sure, yogurt has some beneficial bacteria that's necessary for a healthy digestive system, but yogurt is NOT fat free, pink, nor does it contain any sugar other than the lactose present in the milk it is made from. So if you want to eat yogurt, go for it! Just make sure it is made from whole, organic milk (preferably from grass-fed cows), and that it doesn't contain any added sugar or flavors. Add your own fresh fruit and local, raw honey!
All the tips given for the 28 Days of Real Food Challenge were compiled from "Food Rules", by Michael Pollan.