There appears to be a correlation between a person's age and whether they are a morning person or an evening person.

Morning Person

An individual who feels more alert, energetic, and productive in the morning compared to other times of the day.

Evening Person

An individual who naturally feels more energetic and performs better during the evening or night as opposed to the morning.

Age

A measurement of the length of time that a person or object has existed since birth or creation, respectively.