When you're really watching your cash, avoiding spending money when you don't need to can be a huge help.
Consequently, knowing the difference between when you're hungry and when you're thirsty can help you save some cash (and calories). As reported in "Dr. Oz's Top 5 Mistakes Dieters Make," "Because the hormones in our intestines that tell us we're hungry are very similar to the hormones that let us know we're thirsty, we're not very good at distinguishing hunger from thirst, which is why we typically reach for food when we should be drinking."
So instead of spending way too much for an unhealthy snack next time you think you're hungry, grab a glass of water instead. If you're still hungry afterward, of course, you'll need to eat. But with water available for free all over the place, it might be smart for your wallet -- and waistline -- to try having a drink first.
(Here on the About.com College Life blog, every Thursday is "Thrifty Thursday." I'll post a tip each week about how to save money while you're in school. It might be something big; it might be something small. But given how important each nickel is, each little tip adds up, right?)