Greens, coconut water, gelatin/collagen… people are telling you to put them in your smoothies, right? Hold your horses! Wait! These “superfoods” may not be all they’re cracked up to be. Before you jump in whole hog… pay attention to these 6 DON’Ts and 15 DOs. So you can make nourishing smoothies beyond any doubt! [by Wardee Harmon]