Continue writing the next sentence.

How to know if you're sleep deprived 
Be aware of decreased cognitive function. 
It's no surprise that a lack of sleep can cause irritability and changes in mood. You may actually develop a mood disorder if you're consistently sleep deprived.
Disruptions in the sleep cycle have been strongly connected to depression and a reduced quality of life. You may also feel more anxious and lose your motivation to do simple everyday tasks.