Cut out the pizza completely, or save it for maybe once every fortnight, if that. While you are young, your body will 'shrug it off'. That is, your metabolism and general youth will still accept the pizza, won't make you feel too bad, so you keep eating. But honestly, if you can't tell its bad just by looking at it, well, take another look. There is grease, more grease and dough. Please don't consider the tiny amount of actual vegetables on the pizza as a serving of vegetables, you're pretty much eating dough and grease, this is not healthy. I'm a few years older than you now, and it's getting to the point where eating bad shit a few nights in a row does take its toll on me a bit. I've not done a whole lot of exercise over the last year, I'm still tall and quite thin, but lets just say I don't exactly have a 6 pack. How much exercise you do doesn't really affect how much bad food you should eat. If you are an iron man and add a daily dominos into your diet, you won't be the same after a few months of that. On another note, how's things with the ladies? If you get a steady girlfriend, she'll be out the door if you order pizza 5 nights in a row and she never even sees you in the kitchen. You don't have to be the next celebrity chef, but there is plenty of easy shit that's actually half good for you. Look into stir fry for example, it doesn't get much easier than turning on an electric wok, slamming in a few vegetables and bits of chicken and stirring it around for a while.