Stuff Not Done @ 4am

What the hell am I still awake at 4:30am in the morning? I am still in the midst of my work.. Zzz.. I am in the midst of setting Pure Chemistry questions for my 2 students later to practice just before they go for their exams.. I am also supposed to, which I think I can't get it done at this point of time, prepare a presentation for a client so that she can put in the S$50k that I need for my Project Alpha.. Zzz.. So many things to do yet so little time.. ARGH!!! Better continue with my question setting.. The sun is rising soon.. Darn.. I have tuition at 10am!!! Tata...