Why Can't I Eat Dessert All The Time?

Proteins build (proteins built), fats protect (fats protect)
 Minerals and vitamins prevent
 Carbohydrates give you energy to keep you alert
 You can't get all of that from dessert
 Let's start with minerals and vitamins, better invite 'em in
 They stop problems before they start
 By helpin' out your bones, your brains and circulation
 And cells from your skin to your heart
 Now, I got a question, do you like to play?
 To run, skip, jump and dance your cares away?
 Well, that all takes muscle, so protein's a must
 You'll be stronger eatin' some every day-ay
 Carbohydrates are like gas for a car
 Givin' you energy that gets you where you're goin' from where you are
 Fats protect your cells in your brain
 And kinda everything, now let me hear you sing
 Proteins build (proteins build), fats protect (fats protect)
 Minerals and vitamins prevent
 Carbohydrates give you energy to keep you alert
 You can't get all of that from dessert
 No, you can't get all of that from dessert