What do you usually eat for breakfast? I usually have kale, eggs and sweet potato (I know, it's not for everyone...) Would you believe that one of the worst things you can have is a smoothie? Some of those can provide you with more calories than a burger and fries. Having a bagel or muffin? Not a god choice either, according to Live Strong. How about an egg sandwich? Well, take a look here for the sad truth on those...