I guess there's a couple things. For one, recently I've been drinking sugar free maple syrup whenever I get a craving for sugary junk food. It only has 15 calories per 1/4 cup and tastes, at least to me, much better than cookies. I can't taste the difference between real and fake sugar.

I make my coffee/tea by pouring unsweetened cashew milk into a cup, adding a tea bag, microwaving it for half a minute, pouring more cashew milk into the cup, stirring coffee powder into the mix, and adding two packets of artificial sweetener.

Sometimes I eat one serving of canned tuna mixed with sugar free maple syrup for lunch.

I have a sugar free energy drink (It has to be one with 240mg of caffeine) for breakfast every day. Today I had an additional small energy drink (100mg caffeine) as well.

I run with my backpack on every school day. I also either run up a small hill or run up stairs two steps at a time while carrying my backpack every school day. I figure it's good exercise. My backpack is always filled to the brim with binders, textbooks, and notebooks even when I don't need all of them because it makes the workout more strenuous.

I walk on the balls of my feet instead of using the whole foot about half the time.

Even if I'm dehydrated enough that I it hurts to swallow and I'm getting headaches, I can't bring myself to drink water. For some reason it just seems absolutely vile to me. I drink diet soda (with no caffeine) instead.

I like to have many healthy snacks spread out throughout the afternoon instead of having proper meals.