Draining away

Started from yesterday, something was not right. Because the line was too long, because the burger was not prepared well, because the anime episodes turned to boring, or because Monday was coming? Maybe all of them or none of them. I went to bed before 10 since I felt tired but could not fall into sleep. Turned and tossed. After many hours I was awaken. Felt something. The stomach was not right. The mind was not in peace. I felt something was draining away. Not sure what. But just knew it. Today I felt super tired. So blue. The energy level is low. The happy level hits the red area. What is going on? Because?