For two weeks now, I haven't been able to fall asleep before 4 in the morning. I still wake up at normal hour and haven't feel fresher in each and every single day. Other anomalies are in my decreasing appetite for food and the fact that I do not feel hungry by dinner time even after skipping breakfast and lunch. I even seem to have increasing focus on research, class material, and exercise. Psychological and physiological roots of these observations haven't been researched further.