Interestingly, while happiness increases somewhat on the weekend, declines in worry, anger and stress are much larger. Stress is one-third less common on the weekend, the largest effect the weekend has on one of seven emotions measured in the study.

John Helliwell, with the University of British Columbia, and Shun Wang, with the Korea Development Institute, authored the study.

Helliwell and Wang looked at the Gallup/Healthways United States Daily Poll from 2008-12. The survey asked respondents about seven emotions: happiness, enjoyment, laughter, worry, sadness, anger and stress. Respondents said “yes” or “no” to questions about whether they felt an emotion during the previous day.