Add this to the ever-growing list of reasons to go back to sleep: a new study led by UC Berkley psychologist Amie Gordon reveals that lack of sleep tends to make people less appreciative towards their significant others.

It's Monday. For most of us, that means it's back to the grind — whether that grind be work, school, or some other scheduled obligation. Unfortunately for weekend warriors everywhere, these obligations typically require us to get up earlier than we'd choose if it were up to us.