It's not a hormonal imbalance or weak coffee. The stars aren't out of whack, either.

Today's bad mood is brought to you by daylight saving time.

According to a recent study, published in the Charlotte Business Journal, 61 percent of adults feel the effects of daylight saving time the Monday after. (The most recent time change was Sunday, when sleepers lost an hour.)

In the survey, conducted by the Better Sleep Council, 74 percent of workers over the age of 30 said not getting enough sleep affects their work. Nine percent said the lack of sleep means they are likely to fall asleep when in a meeting - or even when driving. Four percent admitted to getting into traffic accidents due to lack of sleep.

Combat that bad mood by checking out this Buzzfeed piece on the 30 happiest facts of all time.