Hi. Not sure if it was already mentioned, but cottage chz has less carbs than yogurt.
I was a vegetarian when I went to college my first year. Quite a challenge and really affects training. I was training for a marathon then and my body took a beating.
I did run the marathon and was happy with my results, but I packed on a lot of weight not eating chicken.
Now I will eat chicken, and turkey once in a long while. No fish, uck, tuna, and never any red meat (that includes cows, pigs, and all other animals except chickens).
The next year, I ran another marathon and had the same body type as the year before. Cardio is good in college, because you can study on the bike or treadmill as you get your workout in. That's good that you are doing cardio, even if your too busy for weights.
Now (4 or 5 yrs later) I have extremely low body fat and run only 3 miles a few times a wk.