In case you need a reason to stay in bed: January 19, 2009, is supposedly going to be the most depressing day in history, according to British experts. It has been dubbed "Blue Monday."

Psychologists used a formula that takes into account six factors to determine exactly when we are most likely to feel down. The factors they chose include weather, debt, time since Christmas, time since failing our New Year’s resolutions, low motivation levels and the feeling of a need to take action. They say this year will be particularly bad because of the economic downturn. Separate research has shown that 22% of workers are likely to call in sick today as seasonal illness hits a peak, and other research has shown that today is the day most likely for accidents. [Daily Mail & BBC]

Image via exploding dog.

Send an email to Katy Kelleher, the author of this post, at katy@jezebel.com.