morningness and eveningness preferences

Morningness refers to the preference or tendency to be most awake, alert, and productive during the earlier hours of the day, typically morning. Eveningness, on the other hand, refers to the preference or tendency to be most awake, alert, and productive during the later hours of the day, typically evening or night. These preferences are related to an individual's internal body clock, also known as their circadian rhythm.

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