When I was a kid in the 70's we lived off of Hamburger Helper, KD, Capt Highliner Fish and chips, pizza on Saturdays and a healthier Sunday dinner, Roast or pork chops. Cragmont cola was in the cold room as well. 

My mom cooked like this for her 4 sons because we were always on the run from, playing road and real and shinny hockey, baseball, bike riding, football, basketball, swimming, walking to and from school and running from ticked off neighbors who's gardens had just been raided. We played guns and built snow forts and never wore a bike helmet.

My 2 kids, now 17 and 15 have a similar diet, they've cooked the KD and Hamburger Helper once a week since they were 12 ad 10 for family Tuesday dinner as my wife and I are busy. 

None of us are obese but we are also active. My neighbor often offers the use of his snow blower to clear our driveway. I politely refuse his offer and point to my kids. They can do it with their old man.