10. Your food sensitivities.
Being negatively affected by caffeine may sound like the worst fate in the world, but you should know how these types of components influence your well-being or behavior. This goes for alcohol, too. College (unfortunately) can't last forever -- it's time to understand your own limits.
11. A basic understanding of your health insurance.
HMO, copay, deductible... the terminology alone can make your head spin. Take time to immerse yourself in the basic rules and features of your health insurance plan. It'll make things a lot easier when you're looking for a physician, and less surprising when it's time to pay for your appointment.