Look at how happy he is!
Junk food is sugary, salty, and greasy. It is also delicious and colorful.
Exercising is time consuming and tiring. It depletes you of energy that could be used doing other things that could be more fun.
People spend an average of 7 to 9 hours sleeping everyday. Imagine what you could achieve during those 7 to 9 hours if you were awake. The possibilities are endless.