In people who work during the day, cortisol levels in the plasma are normally higher in the morning than at night.

Question

Quizplus · Accepted Answer

This is true. Cortisol is a hormone that is naturally produced by the adrenal gland and is involved in the body's stress response. Cortisol levels are typically highest in the morning, which helps to promote wakefulness and alertness, and gradually decrease throughout the day, with the lowest levels occurring in the evening and at night. This pattern of cortisol release is known as the diurnal rhythm, and it is a natural part of the body's circadian rhythm or internal clock.

In People Who Work During the Day, Cortisol Levels in the Plasma