I took half day unpaid leave yesterday because I was extremely sleepy. Besides getting only 5 hours of sleep, the food that I took the night before might be the culprit too. I pass motion before bed and right after I got up the next morning. It was very watery stool. Then I knew something is not right with the food that I ate.
I don't mind taking unpaid leave for just sleeping because my health is more important that the $$$ sign. If I fall sick, not only I have to bear my own medical expenses, I have to suffer pain too.