What Time Of Day Does Coffee Work?

Author: Leticia Celentano Time for reading: ~0 minutes Last Updated: February 12, 2026

In this article, learn more about What Time Of Day Does Coffee Work?. Caffeine consumption should not coincide with the peak of the hormone cortisol..

The thought of a cup of coffee is often the first morning after getting up. But do we consume it at the right time?

The biological clock is associated with many processes in the body, including the degree of drowsiness during the day. In this way the synthesis of the hormone cortisol is regulated . It is known as a stress hormone , and the reason for its fame is that released in large quantities, it unlocks the answer "fight or flight".

Of cortisol we owe our vigilance . Its peak time is between 08:00 and 09:00. This means that the body has a natural mechanism for awakening .

Scientists have found that caffeine consumption during this period can significantly reduce the effects of caffeine and increase its resistance to the substance in the long run.

For this reason, consuming caffeine after 9:00 am is probably the best way to take advantage of its invigorating effect.

Scientists have established several more time zones when cortisol is at its peak - between 12:00 and 13:00 and between 17:30 - 18:30. So choose to drink coffee or a refreshing drink at different times.

What Time Of Day Does Coffee Work?

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