According to a recent study in the journal 'Obesity', your natural desire for when you go to sleep is called your chronotype, and your chronotype may be affecting your eating habits.
Researchers with the Academy of Finland have discovered that night owls, or "evening types", tend to consume more sugar and fats at night compared to morning people.
The difference in diet choices between morning people and night owls is significant on weekends, when the night owls consume even more fat than the early birds, and tend to eat more often.