College is the prime time and place to catch a cold... or worse. Although, somehow I managed to crack the code to health and not get sick my whole first year of college. This is surprising considering I was living in the close (and very unsanitary) quarters of a dorm room.
Keep your diet somewhat healthy
I know how hard it is to eat healthy in college, especially on a low budget. But with the dining hall foods, you can at least include some vegetables and fruits into your everyday consumption. The vitamins in these foods will help keep your immune system up and it will be worth the effort.
Try to exercise a few times per week
Even if you're just getting out of the dorm for a thirty minute walk, it will benefit your body. If you decide to up your routine from that, even better! The more endorphins, the more you will feel better inside and out.
Cut back on the drinking if you feel a cold coming on
Surprisingly, many college students don't seem to know that alcohol lowers your immune system. Of course, for some people theres no way of avoiding drinking. But if you can at least give your body rest days, it will be extremely beneficial.
Invest in a dehumidifier for your dorm room
I believe this was a very big player in helping me not get sick. The dehumidifier helps reduce dust and other particles in the air. This will help not agitate your allergies and you will feel more clear headed.
Try not to share personal products
Sharing things like towels, makeup, unwashed cups, etc. can all be causes of a sickness being passed around you and your friends. Of course sharing is caring, just make sure it's sanitary.
Be conscientious of who you kiss!
Make sure that your girlfriend, boyfriend, or "its complicated" person is not sick before you're getting cozy with them.
Drink lots of green tea!
Personally, I credit green tea and its anti-oxidants for keeping the flu away and even getting rid of bugs that might be forming in your system. So if you feel like you might be developing a cold, chug that tea!
I know how annoying these tips may be. But I promise, if you implement at least a few it could reduce your chances of feeling horrible during midterms in the winter, and sneezing all over your finals in the fall.