Moodgrapher — Cyclic events
Many of the moods reported by LiveJournal users display a cyclic behavior. There are some obvious moods with a daily cyclus. For instance, people feel awake in the mornings and tired in the evening.
If you take a closer look and compare moods, you'll see daily increases in hunger around lunch time, a few hourse after the morning peaks in the "awake" mood.
Other moods show a weekly cycle. Watch the pattern associated with the "drunk" mood below.