If you had trouble getting out of bed this morning, it might just be because you had a great Labor Day Weekend – and need some time to recover.

Or, it could be because you suffer from sleep drunkenness, which – according to researchers at Stanford University – is a real disorder that affects one-in-seven adults.

Specific symptoms include confusion and excessive weariness upon waking.

In other words, if you’re just not a “morning person,” there might be something really wrong with you and you might be dealing with an honest-to-goodness disorder.