1. You're not getting enough fruits and vegetables. A recent study found that people who eat seven servings of produce a day tend to be happier, less anxious, and less likely to be depressed.
2. You're dehydrated. A 2012 study found that even being a LITTLE dehydrated can put you in a bad mood. In general, men should get at least 3.7 liters of water a day, and women should get 2.7. And yes, things like coffee and juice DO count.
3. You check Facebook too much. A study this year found that if you're on there constantly, you start realizing it's a HUGE waste of time . . . which makes you feel bad about yourself. And that probably applies for things like fantasy football too.
And here's six more reasons you're grumpy this morning and what to do about it from the Huffington Post.