On the seventh day

A new study suggests there might be a direct correlation between the days of the week and daily riks.

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A new study suggests there might be a direct correlation between the day of the week and the chances of success of an operation or the risk of car accidents or street crime, among other things.

Researchers from Imperial College London found that Monday is the safest day to have an operation - but it's also the day when thieves are most active. Tuesday is the second safest day for an operation, and the safest day to drive. Thursday is in the middle of the week in terms of risks, although it is the best day to have sex, with cortisol levels at their highest. Generally, Sunday is the safest day.

But Friday is the scariest day. It is the most dangerous day to drive. More astonishingly, Friday is the most likely day for the eruption of wars or for coups. As The Guardian noted, four of the world's 15 leaders who ascended to power through a coup did so on a Friday, including Sudan's Omar Al Bashir. Tunisia's Zine El Abidine Ben Ali fled the country on a Friday, and Egypt's Hosni Mubarak was toppled on a Friday.

Some of these findings are specific to the United Kingdom, though there are some striking similarities with trends in this region. Friday in the UAE, for example, is often associated with higher rates of road accidents. Thursday has been traditionally associated with couples having sex, as it is the day before the weekend. Navigating the week just got easier.