An analysis of the language in social media messages posted via the Internet determined that, on average, the use of words associated with positive moods is common in the morning, decreases gradually to a low point midaftemoon, and then increases sharply throughout the evening
This shows that a person' s mood typically starts out happy in the morning, declines during the day, and improves in the evening
people's overall moods are lowest at the beginning of the workweek and rise later, peaking on the weekend