Changing to winter time on October 30 “is not dramatic and can even be enjoyable”, Teresa Paiva says.
“We sleep one more hour. The American National Sleep Foundation even advises to take advantage of the change of time to improve sleep habits”.
The less pleasant side of it is that “there is the need to adjust the biological clock in one hour. It is like flying from Paris to Lisbon, it always requires an adjustment, whose easiness varies from person to person, but it takes about one day.”
What about summer time?
“The change to summer time is the opposite; it is like flying from Lisbon to Paris. It is a little worse, because it implies a sleep deprivation of an hour”, she says. “There are some studies, although contradictory, which point to a higher prevalence of accidents in the days following the change to summer time. And of myocardial infarctions as well”, she adds.
“It also increases cyberloafing, the ‘hanging around’ on the internet, probably as a result of sleep deprivation”,Teresa Paiva concludes.
The time change is due to an EU directive which states that Member States must enter the winter time on the last Sunday in October and adopt the summer time on the last Sunday in March, regardless of the time zone in which they are. Its initial goal was to save energy.