The clock is set back by one hour during the last weekend of October, as it has been every year since 1976, to switch to winter time. In the night from Saturday to Sunday, at 3 a.m., the time will go back to 2 a.m. All electronic devices, such as mobile phones or computers, will automatically switch to winter time. However, if you have watches or clocks with manual adjustment, it is important to adjust them when you wake up. Some people will be happy to gain an extra hour of sleep on Sunday morning, while others would have preferred to stay on summer time. The time change can cause discomfort for some people due to the disruption of their biological clock, which regulates circadian rhythms. For some individuals, re-adaptation can take several weeks, particularly for older people. Scientific research confirms that the time change can have health consequences, including sleep disturbances, vigilance issues, work and road accidents, depressions, myocardial infarctions, and cerebral vascular accidents, according to Inserm. The switch to winter time is generally considered less complicated for the body than the switch to summer time, as it involves gaining an hour of sleep rather than losing one, according to neurobiologist and Inserm researcher Claude Gronfier. The time change can also disrupt eating behavior, causing hunger to occur earlier on Sunday. Dietitian-nutritionist Nathalie Negro suggests either waiting until the usual meal time or planning snacks to avoid overeating. The winter transition allows for an extra hour at the end of the day, which can be used to revise evening routines with calming activities and soft lighting to facilitate falling asleep. Sophrologist Clémentine Joachim recommends prana exercises for early risers and body heating exercises for late risers to help them adapt to the time change. The end of the time change was discussed in 2019 by European deputies, with the measure intended to apply in 2021. However, it was postponed due to the sanitary crisis of the Covid-19 and is no longer on the agenda. The time change can also pose a danger on the roads, as visibility is reduced. In the days following the time change, the number of deaths among pedestrians increases by 42% between 5 p.m. and 7 p.m., according to the government. Safety tips include wearing light-colored clothes or reflective accessories, checking lights and brakes on vehicles, and respecting safety distances. The time change was introduced in France following the 1973-1974 oil crisis to save energy by reducing the time of artificial lighting in the evening.