So THAT's Why You Always Feel Groggy In The Morning No Matter How Much You Sleep

It doesn’t matter if I sleep a full eight hours or struggle through a meagre five ― I’m always groggy, confused and sleepy first thing in the morning. 

That’s not just because most women need more sleep than men, it seems. According to The Sleep Foundation, I might be dealing with sleep inertia.

The phenomenon, which can make you disoriented, drowsy and uncoordinated, has no known cause.

But experts think it could happen when a person is woken during non-REM sleep, due to changes in blood flow...